Reduce size of go image

[akosyakov]

See for the guidance: #14 (comment)

[JanKoehnlein]

I cannot get the latest go running on alpine. Tried for a few hours, postponing now.

• latest apk for alpine is 1.8.4, which is seriously behind the current 1.9.2.
• The binary blob is not executable on alpine. It's not a chmod issue, rather some missing runtime or wrong architecture.
• Building go from sources with the 1.8.4 yields a segmentation fault while running the tests

[Zate]

Still tinkering with this but I was able to get it from ~1.4GB down to 745mb.

Going to dig deeper, but as you can see below, the theia app is ~173mb, Go is 264mb and the installed go deps are ~ 240mb.

I'm going to explore perhaps statically compiling all the go deps (but i dont think this will work), and see what I can slim out of the go install itself but am not hopeful as golang:1.9-alpine is 269mb on it's own.

Not sure I can get it much smaller. I'll stick the Dockerfile etc up once I am done tinkering.

> $ docker history a0945ede9efa
> IMAGE               CREATED             CREATED BY                                      SIZE                COMMENT
> a0945ede9efa        6 minutes ago       /bin/sh -c #(nop)  ENTRYPOINT ["/bin/sh" "-c…   0B
> ea10e8342c44        6 minutes ago       /bin/sh -c #(nop)  ENV USE_LOCAL_GIT=true       0B
> 5d989e8ac219        6 minutes ago       /bin/sh -c #(nop)  ENV SHELL=/bin/bash          0B
> e1d7521aa8d3        6 minutes ago       /bin/sh -c #(nop)  EXPOSE 3000                  0B
> 90ab98b35ed5        6 minutes ago       /bin/sh -c apk add --no-cache git openssh-cl…   240MB
> 313d9b9788c6        13 minutes ago      /bin/sh -c #(nop) COPY dir:2eaf1b244da5df459…   264MB
> a394158fd65c        13 minutes ago      /bin/sh -c #(nop) COPY dir:ed68ba95ee37b16d2…   173MB
> b6a793052b33        13 minutes ago      /bin/sh -c #(nop) WORKDIR /home/theia           0B
> 406f227b21f5        3 days ago          /bin/sh -c #(nop)  CMD ["node"]                 0B
> <missing>           3 days ago          /bin/sh -c apk add --no-cache --virtual .bui…   4.19MB
> <missing>           3 days ago          /bin/sh -c #(nop)  ENV YARN_VERSION=1.3.2       0B
> <missing>           3 days ago          /bin/sh -c addgroup -g 1000 node     && addu…   59.9MB
> <missing>           6 weeks ago         /bin/sh -c #(nop)  ENV NODE_VERSION=8.9.4       0B
> <missing>           6 weeks ago         /bin/sh -c #(nop)  CMD ["/bin/sh"]              0B
> <missing>           6 weeks ago         /bin/sh -c #(nop) ADD file:6edc55fb54ec9fc36…   3.97MB

[Zate]

Ok this is pretty untested though it worked on my local, I'm going to build it and stick it up on my server for more testing.

https://github.com/Zate/theia/tree/master/theia-go-docker

[marcdumais-work]

@Zate

https://github.com/Zate/theia/tree/master/theia-go-docker

Link not working for me

[Zate]

Yes sorry moved that into a docker branch on my fork so that automated builds I was working on for the master branch wouldn't break and so i could always rebase to upstream master.

Fair warning, the items in the docker branch as in a state of semi broken flux. feel free to look around but no guarantees on anything building. my Work is heaving right now (writing reviews for a team of 20) and I should be able to look at docker again in a week or so.

https://github.com/zate/theia/tree/docker is the branch. Anything outside of theia-go-docker is likely to be broken. Current dockerfile in that folder is me trying to automate a multistage build from a bare alpine for everything, not just go. The last go specific build I did is I think this one https://github.com/Zate/theia/blob/docker/theia-go-docker/Dockerfiles.experiments/Dockerfile.next

Mostly i just squashed as man RUN elements into a single layer as I could.

[sr229]

@akosyakov I think there's a way to compress it - using the current image. By putting some stuff on a single layer. I'll do a PR about it.

[stale]

This contribution has been automatically marked as stale due to inactivity, and it will be closed if no further activity occurs. Thank you for contributing to Theia!