Kevin-De-Koninck
commented
6 years ago Before:
kevin@Kevins-MacBook-Pro:docker [master] -> docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
stacoan latest 6a04f8627491 23 seconds ago 278MB
anapsix/alpine-java latest 430fab324907 2 months ago 127MB
kevin@Kevins-MacBook-Pro:docker [master] -> docker history stacoan
IMAGE CREATED CREATED BY SIZE COMMENT
6a04f8627491 About a minute ago /bin/sh -c #(nop) ENTRYPOINT ["/bin/bash" "… 0B
fb33226e3041 About a minute ago /bin/sh -c #(nop) EXPOSE 8080 0B
4fa88e94d86a About a minute ago /bin/sh -c #(nop) EXPOSE 8000 0B
0ea6a6e42984 About a minute ago /bin/sh -c dos2unix /stacoan.sh 410B
ba27ed30f113 About a minute ago /bin/sh -c #(nop) COPY file:f52baae16d9f2b54… 410B
da3853ea2759 About a minute ago /bin/sh -c pip3 install -r requirements.txt … 242kB
dec2d64ea27c About a minute ago /bin/sh -c #(nop) WORKDIR /StaCoAn/src 0B
a57e7cbb7d9d About a minute ago /bin/sh -c git clone https://github.com/vinc… 77MB
367c47802f4b About a minute ago /bin/sh -c apk add --no-cache git 14.5MB
ccd079c3d2f7 About a minute ago /bin/sh -c rm -r /root/.cache 0B
14eb112a6efa About a minute ago /bin/sh -c if [[ ! -e /usr/bin/python ]]; th… 16B
e3ba4e9739df About a minute ago /bin/sh -c if [ ! -e /usr/bin/pip ]; then ln… 0B
c1ba63f369ac 2 minutes ago /bin/sh -c pip3 install --upgrade pip setupt… 11.9MB
8e83a26f0d89 2 minutes ago /bin/sh -c rm -r /usr/lib/python*/ensurepip 0B
e7c1cbe3a522 2 minutes ago /bin/sh -c python3 -m ensurepip 0B
8691ba59b47b 2 minutes ago /bin/sh -c apk add --no-cache python3 dos2un… 47.4MB
430fab324907 2 months ago /bin/sh -c set -ex && [[ ${JAVA_VERSION_… 123MB
<missing> 2 months ago /bin/sh -c #(nop) ENV JAVA_VERSION_MAJOR=8 … 0B
<missing> 2 months ago /bin/sh -c #(nop) MAINTAINER Anastas Dancha… 0B
<missing> 5 months ago /bin/sh -c #(nop) CMD ["/bin/sh"] 0B
<missing> 5 months ago /bin/sh -c #(nop) ADD file:093f0723fa46f6cdb… 4.15MB After combining all RUN commands into one:
kevin@Kevins-MacBook-Pro:docker [develop] ≠1 -> docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
stacoan2 latest 81d4ac9f211f 3 seconds ago 207MB
stacoan latest 6a04f8627491 26 minutes ago 278MB
anapsix/alpine-java latest 430fab324907 2 months ago 127MB
kevin@Kevins-MacBook-Pro:docker [develop] ≠1 -> docker history stacoan2
IMAGE CREATED CREATED BY SIZE COMMENT
81d4ac9f211f 35 seconds ago /bin/sh -c #(nop) ENTRYPOINT ["/bin/bash" "… 0B
a6b6d2c38d8c 35 seconds ago /bin/sh -c #(nop) EXPOSE 8080 0B
223a8be4e1a1 36 seconds ago /bin/sh -c #(nop) EXPOSE 8000 0B
c09208d471d5 36 seconds ago /bin/sh -c #(nop) COPY file:c89ccbb55cd84a5f… 445B
8afd394d3639 36 seconds ago /bin/sh -c apk add --update --no-cache pytho… 79.9MB
430fab324907 2 months ago /bin/sh -c set -ex && [[ ${JAVA_VERSION_… 123MB
<missing> 2 months ago /bin/sh -c #(nop) ENV JAVA_VERSION_MAJOR=8 … 0B
<missing> 2 months ago /bin/sh -c #(nop) MAINTAINER Anastas Dancha… 0B
<missing> 5 months ago /bin/sh -c #(nop) CMD ["/bin/sh"] 0B
<missing> 5 months ago /bin/sh -c #(nop) ADD file:093f0723fa46f6cdb… 4.15MB After housekeeping:
kevin@Kevins-MacBook-Pro:docker [develop] ≠2 -> docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
stacoan_mini latest b861aaf31ffa 4 seconds ago 168MB
stacoan latest 6a04f8627491 About an hour ago 278MB
anapsix/alpine-java latest 430fab324907 2 months ago 127MB
kevin@Kevins-MacBook-Pro:docker [develop] ≠2 -> docker history stacoan_mini
IMAGE CREATED CREATED BY SIZE COMMENT
b861aaf31ffa 20 seconds ago /bin/sh -c #(nop) ENTRYPOINT ["/bin/bash" "… 0B
5033dc271485 8 minutes ago /bin/sh -c #(nop) EXPOSE 8080 0B
cf95fac7f65a 8 minutes ago /bin/sh -c #(nop) EXPOSE 8000 0B
339a4175feea 8 minutes ago /bin/sh -c #(nop) COPY file:5dd7933a97ec60c9… 397B
69a4d6b0634b 8 minutes ago /bin/sh -c #(nop) WORKDIR /StaCoAn 0B
fbd3206d46e5 8 minutes ago /bin/sh -c apk add --update --no-cache pytho… 40.3MB
430fab324907 2 months ago /bin/sh -c set -ex && [[ ${JAVA_VERSION_… 123MB
<missing> 2 months ago /bin/sh -c #(nop) ENV JAVA_VERSION_MAJOR=8 … 0B
<missing> 2 months ago /bin/sh -c #(nop) MAINTAINER Anastas Dancha… 0B
<missing> 5 months ago /bin/sh -c #(nop) CMD ["/bin/sh"] 0B
<missing> 5 months ago /bin/sh -c #(nop) ADD file:093f0723fa46f6cdb… 4.15MB So this minimizes the image again (278MB -> 168MB) which is a reduce of almost 40%. In the end we went from 1.44GB to 168MB which is a decrease of almost 90%. Not bad if you ask me :)
As you can see, the largest size is the JAVA layer. The StaCoAn Layer is about 40MB, but it can be reduced maybe, but I leave that part as an exercise for the reader.
I did a rewrite of your old Docker container (https://github.com/vincentcox/StaCoAn/pull/47) to reduce the size from 1.44GB to 264MB. At that time, I did not know Docker well enough and now I think that I can further optimize the container's image size by combining RUN commands.
Maybe some packages can be installed
virtualthat are only needed during build steps (info). Don't know this for sure since I don't know the Dockerfile that well. (First look suggests pip3 is one of those packages)I'll try this tonight, it will be good to see if there is a noticeable difference.