Use a multi-stage Dockerfile to have slimmer image #217
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tanji
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Mar 14, 2018
docker/Dockerfile
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| RUN rm -rf /go/src /go/pkg && apk --no-cache del make git musl-dev | ||
| RUN mkdir /lib64 && ln -s /lib/libc.musl-x86_64.so.1 /lib64/ld-linux-x86-64.so.2 | ||
| #RUN mkdir /lib64 && ln -s /lib/libc.musl-x86_64.so.1 /lib64/ld-linux-x86-64.so.2 |
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I see you have commented this, is there a particular reason for doing it?
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It's a relic. I wasn't sure whether it's still needed. Turned out it's apparently not.
I've removed the line.
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Mar 16, 2018
While signal18/replication-manager#217 is open, provide a dedicated build context for a smaller image
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OK. Sorry for the late reply (was on vacations). The image works great even without the symbolic link. Therefore I am merging this PR. Thanks for the contribution! |
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This PR improves the docker image by using a multistage Dockerfile. This allows to keep build-time dependencies in a dedicated container.
The previous implementation just deleted the build tools, but due to docker's layering schema they were still hidden in lower layers, leading to a unnecessary big image (729MB).
The actual image of the final build stage is based on a plain alpine:3.7 and is only 36MB.