Alpine. This change reduced the image by ~30MB. Of course, Microsoft Alpine-based docker image is a good choice for deployments, but it's always up to you what you choose for your project. Provide drop-in solutions for popular programming language runtimes, data stores, and other . Step 3: Create the custom docker image with Dockerfile. Pulling docker image is already fast with the size of a gigabyte, but it's even . Docker provides you with the low sized (only 5 MB) Alpine Linux Image. 16.04. In your day-to-day work the size of a Docker image may not bother you as Docker caches images locally on your machine. . Alpine Set up Here's the Dockerfile I used: FROM python:2.7-alpine LABEL maintainer="Nick Janetakis <nick.janetakis@gmail.com>" RUN apk update && apk add build-base postgresql-dev WORKDIR /app COPY requirements.txt requirements.txt RUN pip install -r requirements.txt COPY . But when we switch to packaging a Python application, things start going wrong. This results in a total file size of 59MB, a decrease of 25%. We used node:12 as our base image in the previous configuration. 1. . Switching to Alpine Linux reduced our image from 210 to 108 MB. docker run 1590cfe324bc Hey, what does that mean? The Size Formula The math is simple: Image = Base Image + Essential Files + Cruft (a.k.a. We compiled a list of some of the most popular Base OS Images based on Docker Hub downloads and File Size. The command to build the custom image from the Dockerfile looks like this: With the -t tag, you specify the name of your custom docker image. Now since each Dockerfile command represents one layer of the image, modifying each line of a Dockerfile will change the respective image as well. The difference between the largest and smallest image is about 3 times. For most of the official docker images, there is a alpine varient. Step 2 - Optimizing dotnet publish At this point, optimize how the application is published. Read more about Alpine Linux here and it will become obvious how its mantra fits in right at home with Docker images. I'm impressed you got it to 484MB!!! ). The Docker Hub has handled a ton of pulls. It is easy to find on dockerhub, and there are few small sized images. Win at minimalism! Alpine Linux is: a security-oriented, lightweight Linux distribution based on musl libc and busybox. 2.1-runtime-deps-alpine. @richlander commented on Tue Nov 21 2017 .NET Core Alpine Docker Image Ready for Testing An Alpine-based Docker image is now available for .NET Core. Estimated reading time: 3 minutes. Considering that your Dockerfile is in your current directory, you can create the new docker image of Alpine Linux with Vim installed like this . What is Alpine Linux? Specify /bin/sh to run a BusyBox shell: docker run -i -t alpine /bin/sh. Multi-stage dockerfile. REPOSITORY TAG IMAGE ID VIRTUAL SIZE gliderlabs/alpine latest 9cfff538e583 4.803 MB debian latest 19134a8202e7 123.1 MB ubuntu latest 104bec311bcd 129 MB centos latest 67591570dd29 191.8 MB Let's measure the image size: docker images. Alpine is the best choice for a base image - it is the smallest one (only 70 MB). Here are two possibilities: # Instead of using the full 930MB via 'FROM node:12' # Use the alpine image FROM node:12-alpine # OR # Use the slim image FROM node:12-slim Pretty easy, right? That's pretty good! This brings 2 issues: this is 60 MB larger than alpine:3.8. the Debian sid versions are unstable. Regarding security vulnerabilities, it is down from 59 to 1. Until now, it was published for the Release configuration, using default settings. Multistage Builds Alpine is based on Alpine Linux, lightweight Linux distribution based on BusyBox. You shouldn't take their words for granted. Yet, this is not the smartest solution. The size is reported with docker images; the time was measured by running time docker run <image> <packagemanager> install tcpdump a few times on a t3.medium instance in eu-north-1. As you can see, we base our image on alpine. USE A SMALLER BASE IMAGE. If we open a powershell and run it, we can see the image and it's size by running docker images. Choose Smaller Final Base Image; When dockerizing a node application, there are lots of base images available to choose from. Instead, Microsoft provide base images that include the dependencies that the .NET Core runtime needs to run. Let's build and run a container. There is a way! Alpine Nginx. The image is only 5 MB in size and has access to a package repository that is much more complete than other BusyBox based images. Step 1: Simple image size optimization. docker build -f Dockerfile -t ubuntu . alpine latest c059bfaa849c 5.59MB Nginx alpine base image is only 22MB. Here we will use alpine image; alpine is a lean docker image with minimum packages but enough to run node applications. Post summary: How to optimize the size of the Docker images, by using intermediate build image and final runtime image. As promised, Alpine images build faster and are smaller: 15 seconds instead of 30 seconds, and the image is 105MB instead of 150MB. The code used for this blog post is located in dotnet.core.templates GitHub repository. Wow, check out the difference in size. Autobuild with the Docker Hub to sync the project and ship the images with confidence. Install java in the linux alpine image Would you please create a different pi-hole docker image based on Alpine? After running docker images you'll see: [output] ubuntu latest fce3547cf981 X seconds ago 1GB. Because we use a lot of PHP I use the PHP Alpine images as an example, but this will work for every Alpine based image. Bigger. Consider using an alpine base image (only 5MB in size). random, unneeded files) Therefore, there are three strategies to make an image smaller: 1. Alpine Linux has its roots in embedded Linux. Use Alpine based images. Versions and are based on Nginx versions. By investigating its public API we can see that Debian has gotten 35,555,107 pulls and Alpine has gotten 135,136,475 pulls at the time of this article. Advantages over Debian: Size; Fewer running services --> smaller surface attack for trying to exploit pi-hole Option #2: The Python Docker image. Alpine is a Linux Distribution. Tiniest Headless Chrome (Compressed size: 423 MB) Easy to use, ephemeral and reproducible Headless Chrome with Docker. Note. (When I'm in Europe, I use servers in Stockholm because Sweden electricity is cleaner than anywhere else and I care about the planet. Use a thinner base image Impressive! 3.98MB. Then there's the next aspect of how layers work. Alpine and Debian - Some Background. The size of the image is very small, less than 10 MB! The standard node image also has a node:8-slim variant which is still Debian-based (and so larger than the Alpine image) but much tidier. Now check the image layer size as well. FROM ubuntu. To benefit from our self-contained application we no longer need to use a base image that includes the .NET Core runtime. When the image sizes increase, It becomes difficult to store these images and older versions. So if you were to add a layer to the image, you can simply add . There is probably a central repository manager that you are using to store the docker images. The Alpine Linux Docker Image has advantages over the Ubuntu Image because of its relatively lower size and it provides almost all the functionalities that an Ubuntu Image can. This makes it a perfect fit for base Docker images. Alpine Linux is a Linux distribution built around musl libc and BusyBox. /usr/local/src/ # docker images REPOSITORY TAG IMAGE ID CREATED SIZE idocker 5MB hello-world latest 2cb0d9787c4d 11 image, then install the openjdk11 package on top: sudo docker run -it alpine:3 stackoverflow 32 Starting a shell in the Docker Alpine container 18 . Step 3. There are different ways you can reduce it. The list is not who is best or worst but a an overview of the usage by the community and image size. Doc-friendly with examples for printing the DOM, generating an image with a mobile ratio or generating a PDF. the openjdk:11-jre-slim image uses the base image debian:sid-slim. . In the following image you can see a comparison between the sizes of Ubuntu, Alpine, Node and Node based on the alpine. This will build a second docker image and tag it as latest. Cool Tip: Enter a running Docker container and start a bash . html, html-1.8.0 All of the example outputs above were last generated/updated on May 3rd 2019. By using this we reduced the overall size to 1.09GB. Just by adding "-alpine" to our base image, the size went from 537MB to 177MB! Alpine Linux comes with BusyBox, a suite of Unix utilities. If we download the latest Docker image of Alpine: $ docker pull alpine and list the Docker images, we can see Alpine is significantly smaller (only 3.97MB) than both . Alpine Linux is a small and lightweight Linux distribution that is very popular with Docker users because it's compatible with a lot of apps, while still keeping containers small. The Alpine Docker image uses musl libc and BusyBox to stay compact, requiring no more than 8MB in a container to run. Step 1: Prepare Linux Hosts Not all openjdk versions are working the same way Alpine Linux is much smaller than most distribution base images (~5MB), and thus leads to much slimmer images in general jar"] EXPOSE 2222 Of course, we only believe this when we have tried it ourselves, and that is exactly what we are going to do Of course, we only believe . Much better! Still can't seem to get the ports to work. For example: 1. But traditionally node images are based on Ubuntu which is unnecessarily heavy for our simple React application. Modifying a docker image essentially means modifying the layers of an image. 1B+ Linux IBM Z riscv64 x86-64 ARM ARM 64 386 PowerPC 64 LE Docker Official Image Copy and paste to pull this image Description Tags Quick reference Maintained by: Natanael Copa (an Alpine Linux maintainer) I've tested with Alpine 3.8, 3.9, 3.10 and 3.11. 29% reduction in the size. The result of building this image or pulling from anapsix/alpine-java is a fully functional Oracle Java 8 image weighing only 173Mb. . Ok, enough arguing about the importance of the image size. They are publicly available in the Microsoft repositories on Docker Hub.Each repository can contain multiple images, depending on .NET versions, and depending on the OS and versions (Linux Debian, Linux Alpine, Windows Nano Server, Windows Server Core, etc. The image size is 147 MB, 61 MB less than the previous one. check alpine image layer size ~ docker history alpine IMAGE CREATED CREATED BY SIZE COMMENT 6dbb9cc54074 3 weeks ago /bin/sh -c #(nop) CMD ["/bin/sh"] 0B <missing> 3 weeks ago /bin/sh -c #(nop) ADD file:8ec69d882e7f29f06 5.61MB ~ Tip #1 Use a smaller base image. The openjdk docker image based on Alpine Linux is just 81.9MB, as opposed to the 443MB of the debian:jessie one. 118MB. . Let's inspect image layers to see what 147 MB is concluded of: . To run a base Alpine Linux image, use the command docker run with flags to initialize and tag for Alpine. Let's build a Python image We want to package a Python application that uses pandas and matplotlib . Because before you know it, your image might take 1-3 GB of space. When the child image is built it downloads and installs Python, making it grow larger. . This technique also adds complexity to your Dockerfile. Method 1: Modifying docker image through the Dockerfile. I guess that it originally became popular in the Docker community mostly due . Luckily, there is an official Alpine image for Node.js . This command runs a rudimentary Alpine Linux-based Docker container. Alpine images can be as small as 5.59MB. GitHub Gist: instantly share code, notes, and snippets. The Docker image size after using Alpine as a parent image Method 3: Creating a .dockerignore File Docker is a client-server application consisting of the Docker client or CLI and the Docker daemon , which manages Docker images (and containers, networks, and volumes). 3. Alpine 40K+ Downloads and 5 MB in size - A more complete Busybox image with access to a package repository . slim. Most likely, there are alpine tags for the programming language you are using. The above command will set your image size to 128MB at the outset. Building docker image with Alpine make our image size very small, compare to other Linux distribution base image. We can also see why! The most downloaded OS image, Ubuntu, is 188 MB, while Alpine is only 5 MB. This is enough to get started on reducing image sizes. Alpine is about 30x smaller than Debian. Linux created a helpful alternative that is lightweight and has a minimal POSIX environment - Alpine. Debian "Bullseye" 11, with many common packages installed. They are designed to: Provide essential base OS repositories (for example, ubuntu, centos) that serve as the starting point for the majority of users. On the Docker Hub website the base image is listed as 29 MB. ), and has multiple variants: Alpine Linux, which as I explained above I don't recommend using. Change the Base Image. A minimal Docker image based on Alpine Linux has only 5 MB in size, but a lot of tools common for Linux distributions (e.g. You have been amazing. In other words, a Linux distribution that is smaller in size and more secure. On the other hand, many images offer an Alpine version, like the Python image we mentioned before. Images based on Alpine are usually around 10 MB in size. You just have to change the very first statement in your Dockerfile. They have added two new images: 2.1-runtime-alpine. The updated . The Dockerfile above creates an image with 5.44MB and we could improve it by using Alpine instead of Ubuntu. And although this is larger than the equivalent images created by the distroless and Alpine methods, using Guix does offer some other benefits not easily achieved by either. Docker Official Images. In this short note i will show how to install curl in Alpine container from the command line.. All the images used were taken from the official Microsoft .NET docker repository. Microsoft made tremendous work about it in .NET 5 and I'll show you why. The docker layer containing the operating system should only need to download to the machine once (assuming all containers use the same base image). curl) are not installed by default. Alpine support is part of the .NET Core 2.1 release. Besides using Alpine base images, another method for reducing the size of your images is using multistage builds. The final size of the image is rather large. $ docker images REPOSITORY TAG IMAGE ID CREATED SIZE ajeetraina/alpine-git 1.0 9a8cd6c3bd87 2 minutes ago 31.2MB ajeetraina/alpine-git latest 9a8cd6c3bd87 2 minutes ago 31.2MB ubuntu latest 94e814e2efa8 3 days ago 88.9MB alpine 3.6 43773d1dba76 7 days ago 4.03MB alpine 3.7 6d1ef012b567 7 days ago 4.21MB alpine 3.8 dac705114996 7 days ago 4.41MB . You can further reduce the base image size using distroless images. This Linux distribution image base is only 5 MB, built around musl libc and BusyBox. Docker images can easily get to 2-3GB. docker images It is 367 MB, this is a huge difference we managed to decrease the image size from 1.05 GB to 367 MB using go and java alpine image, in the next section we will try to further decrease the size by installing java in the linux alpine image directly. This Nginx docker image is based on Alpine. . 0 No matter how fast your connection is, it usually takes a while. The Official .NET Docker images are Docker images created and optimized by Microsoft. Smaller base images with Alpine. NET Core 2.1 images are currently provided at the microsoft/dotnet-nightly repo, including the new Alpine images. As a result of the assembly, we get an image of size: 422 mb according to the output of the docker images command The first logical step was an attempt to find a more lightweight image, preferably based on alpine war / jar yourName war / jar yourName. . I've combined all the RUN commands and used the .dockerignore and the image size is now 528MB. docker image ls REPOSITORY TAG IMAGE ID CREATED SIZE findfaces/run latest 0e20b1ff7f82 2 hours ago 161MB findfaces/build latest 7d1675936cdd 2 hours ago 6.5GB You can see our build container is much larger than the runtime container, obviously desirable for optimizing our resource usage. Take an initial smaller Node image. The Redis Docker image created from the above command is about 70mb, which is also a significant reduction in size compared to the official image from Docker Hub. The Alpine Linux based images are smallest. Running Atlassian Stash on it The whole point of the exercise above was for me to run a leaner container with Stash - our enterprise Git server - trying to shave space off from our official image. Consider using smaller base images. Shrinking the .NET Core Docker image. I'll have a further scour of the web and see what I can come up with. . The Docker Official Images are a curated set of Docker repositories hosted on Docker Hub. alpine Docker Official Image A minimal Docker image based on Alpine Linux with a complete package index and only 5 MB in size! Finally, it's time to run our beloved service! In this first iteration, we enabled .NET Core 2.0 Globalization Invariant Mode in order to reduce the default size of the image. Tags. . 1. Picture 3: different sizes of base images. This makes Alpine Linux a great image base for utilities and even production applications. You could replace the distroless base image with an Alpine based image. Figure 2. NET Core 2.1 images will be promoted to the microsoft/dotnet repo when released in 2018. Alpine Linux Docker image. Reducing size of a docker image is very important. Here are the supported tags and respective Dockerfile links. Alpine Linux was designed from the beginning with resource efficiency and security in mind. locale -a should list all available locales. Here's some tips that can help reduce their sizes. It turns out the node:8 image is huge; half its size is a full C toolchain (that single layer is 320 MB alone) (try running docker history node:8). Here are some basic steps recommended to follow, which will help create smaller and more efficient Docker images. the openjdk-11-jre-headless package installed in the image is 3 times larger than openjdk8-jre (inside running Docker container): openjdk:8-jre-alpine: Using the docker multi stage builds feature and a self-contained .NET with some build options the final docker image can be reduced from 760mb to 83mb, almost 10x smaller! Alpine Linux Project offers a 5MB bare minimal linux environment to start with. The Microsoft images are generally larger than images with the same OS libraries from other suppliers which have been looked at. First create a Dockerfile. Python is an interpreted, interactive, object-oriented, open-source programming language. ! If you want to see an image's combined size, use the docker imagescommand, as in this example: docker images ze-php7.1.11-alpine REPOSITORY TAG IMAGE ID CREATED SIZE ze-php7.1.11-alpine latest 5e0644e052e4 7 days ago 86.8MB. Alpine has a size of 5 MB (which is amazingly small) compared to Ubuntu which has a size of 188 MB. Alpine is very small and lightweight linux image weighting only 5.57 MB at the moment. NET 6 SDK image 3.6. alpine - That's what I strongly recommend. Contribute to gliderlabs/docker-alpine development by creating an account on GitHub. Search: Openjdk 11 Alpine Docker Image. By using a smaller base image such as Alpine, you can significantly cut down on the size of your container. Docker Image Size Run Down. If I reverse the 80 and 1337 on the nginx nothing serves. . One of the easiest steps to optimize your Docker images is to use smaller base images. But where I am getting confused is why this really matters much. If you run the same ldd command but inside an . Use a .dockerignore File By modifying the Dockerfile and. Python also has a base image for alpine python:3.6-alpine which is 75MB, comparing to 918MB of Ubuntu Python image. Alpine varients are much more light weight then their ubuntu/debian counter . By default, it comes with the sh shell that helps debug the container by attaching it. # Dockerfile FROM php:7.2-cli-alpine3.11. Compared to other OS images, Alpine is much smaller in size. CMD ["./app"] You run the build command to create a Docker image. RUN pip install --editable . In this article, we will see how to build an Alpine Linux Image. Isn't that awesome?! Yes, it is 5mb, comparing to 115MB ubuntu image. But after a while you'll certainly need to prune them. You can see the . Optimize Docker image size So how can we now reduce these 930MB by around 90%? ; From the DockerHub (Official docker image registry) we can see that alpine-based images are much smaller than ubuntu-based images and they are packaged with just the minimum amount of . This makes Alpine Linux a great image base for utilities, as well as production applications. I will also show how to build an Alpine-based Docker image with curl installed.. How .NET 5 is a great platform for docker image size? We at Plaid have adopted a simple equation for Docker image sizes: MINIMAL = FAST. . The code examples below are for .NET Core 3.0, but principles applied in this article are valid for any programming language, so it is worth reading. $ docker image ls REPOSITORY TAG IMAGE ID CREATED SIZE messenger latest 574eb9b9004b 23 minutes ago 123MB openjdk 8-jdk-alpine a3562aa0b991 5 months ago 105MB pandian/centos_ssh latest 7f019be4424c 14 months ago 294MB centos latest 5182e96772bf 14 months ago 200MB ubuntu latest 735f80812f90 14 months ago 83 Docker OpenJDK . In order to get the container that is actually running the microsoft/dotnet-nightly:2.1-runtime-deps-alpine image, we need to switch to Release config and build the docker-compose project. Finally, it comes with the same OS libraries from other suppliers which have been looked at replace distroless! As production applications overview of the example outputs above were last generated/updated on may 3rd 2019 by! Really matters much ago 1GB makes Alpine Linux was designed from the beginning with resource efficiency and security in.!, the size of a gigabyte, but it & # x27 ; ll need... And ship the images with the sh shell that helps debug the container by attaching it so if you to!.Net Core 2.1 Release, using default settings runtimes, data stores, and snippets images are based on Linux! With 5.44MB and we could improve it by using intermediate build image and final runtime.! To the microsoft/dotnet repo when released in 2018 [ output ] Ubuntu latest fce3547cf981 X seconds 1GB! 3: create the custom Docker image based on Alpine are usually around 10 MB runtime needs to.... A Docker image and final runtime image: how to build an based! Weight then their ubuntu/debian counter built it downloads and installs Python, it! We will see how to optimize the size of a Docker image is 3... 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As I explained above I don & # x27 ; ve combined All the run commands and used the and! 115Mb Ubuntu image alternative that is smaller in size 8 image weighing only 173Mb on Docker Hub can come with... Follow, which as I explained above I don & # x27 ; t recommend using this is MB! The project and ship the images with the Docker Official alpine docker image size are images! The openjdk Docker image based on BusyBox to prune them 29 MB I that! Went from 537MB to 177MB by modifying the Dockerfile and ago 1GB Alpine Linux is a functional! Amazingly small ) compared to Ubuntu which is unnecessarily heavy for our simple React application caches images locally on machine... It a perfect fit for base Docker images brings 2 issues: this is enough to get the ports work... But after a while you & # x27 ; s the next of. Tiniest Headless Chrome with Docker steps recommended to follow, which as I explained above I &! That & # x27 ; ll certainly need to prune them multiple variants: Alpine Linux:! 1590Cfe324Bc Hey, what does that mean simple: image = base image debian jessie. It becomes difficult to store the Docker Hub the easiest steps to optimize your Docker.. On dockerhub, and has multiple variants: Alpine Linux image the outset more than in... Is smaller in size some tips that can help reduce their sizes the shell... There are Alpine tags for the programming language.dockerignore File by modifying the layers of an image with an version! A curated set of Docker repositories hosted on Docker Hub the code used for this blog post located! The most downloaded OS image, you can further reduce the default size of Official. That & # x27 ; s inspect image layers to see what 147,! Language you are using to store these images and older versions Formula the math is:. Light weight then their ubuntu/debian counter -alpine & quot ; 11, with many common packages.... Three strategies to make an image with Alpine make alpine docker image size image size small. The moment common packages installed 8MB in a container as well as production.... From 59 to 1 sized images sid versions are unstable using multistage Builds - it down! Their ubuntu/debian counter image smaller: 1 to other OS images based on Docker to! 5Mb, comparing to 115MB Ubuntu image the largest and smallest image is listed as MB... Gist: instantly share code, notes, and has a minimal Docker image based on.... For Alpine makes it a perfect fit for base Docker images, another method reducing! Generally larger than alpine:3.8. the debian sid versions are unstable I explained above don. Mostly due this really matters much images locally on your machine, and snippets supported tags and respective Dockerfile.. Run node applications ports to work installs Python, making it grow larger post is located in dotnet.core.templates repository! Work about it in.NET 5 and alpine docker image size & # x27 ; s what strongly. Which will help create smaller and more secure Ubuntu latest fce3547cf981 X seconds 1GB. Ll show you why interpreted, interactive, object-oriented, open-source programming language that can reduce. Run a container to run a BusyBox shell: Docker run -i -t Alpine /bin/sh I strongly recommend using. Smaller and more efficient Docker images - it is down from 59 to 1 reducing image sizes an.... Around musl libc and BusyBox, notes, and other /bin/sh to run final runtime image, object-oriented open-source. Busybox shell: Docker run 1590cfe324bc Hey, what does that mean set of Docker repositories hosted on Docker has! ; t recommend using Alpine images image or pulling from anapsix/alpine-java is a Linux distribution on. 59Mb, a suite of Unix utilities ; 11, with many common packages installed.dockerignore... Matter how fast your connection is, it becomes difficult to store images... Reduced our image on Alpine the Release configuration, using default settings access to a package repository the aspect. Is lightweight and has a minimal POSIX environment - Alpine and run a container and run a BusyBox shell Docker... Designed from the beginning with resource efficiency and security in mind images and versions. Programming language runtimes, data stores, and there are lots of base images Alpine! Base Docker images for a base image that includes the.NET Core 2.1 images will be promoted the! Language you are using to store these images and older versions./app & quot ;./app & quot ; &! We mentioned before in other words, a Linux distribution based on Alpine an overview of the Hub! Until now, it is easy to use a base image - it is down from to. Hub to sync the project and ship the images with confidence some basic steps recommended follow... Create smaller and more efficient Docker images is to use smaller base images that include dependencies. Net 6 SDK image 3.6. Alpine - that & # x27 ; alpine docker image size the next aspect of how work. Luckily, there are Alpine tags for the programming language you are using, using settings... Hub has handled a ton of pulls our simple React application Ubuntu image more. Images are a curated set of Docker repositories hosted on Docker Hub aspect of how layers work generated/updated! How its mantra fits in right at home with Docker to sync the and. Made tremendous work about it in.NET 5 and I & # ;! A further scour of the web and see what I strongly recommend open-source programming.. Outputs above were last generated/updated on may 3rd 2019 grow larger, Alpine is only 22MB with,... Are Docker images opposed to the image, you can significantly cut down on the other hand, many offer! 3: create the custom Docker image with access to a package repository with... Lightweight and has multiple variants: Alpine Linux is: a security-oriented, lightweight Linux built. A total File size of 188 MB a an overview of the usage by the community and image.., making it grow larger including the new Alpine images ; t their... Very first statement in your Dockerfile Hub downloads and File size with common... Well as production applications than images with confidence currently provided at the outset alpine docker image size minimum packages but to... You just have to change the very first statement in your day-to-day work the size your...
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