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(docker) trim down docker image (300M -> 12M) / binary built without symbol and size optimization, and source code not copied over

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This commit is contained in:
Benjamin Sergeant
2020-03-29 13:05:31 -07:00
parent 22b02e0e5c
commit 40c619c1ec
5 changed files with 46 additions and 21 deletions
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31
docker/Dockerfile.alpine
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@ -1,12 +1,13 @@
FROM alpine:3.11 as build
RUN apk add --no-cache gcc g++ musl-dev linux-headers cmake mbedtls-dev
RUN apk add --no-cache make
RUN apk add --no-cache zlib-dev
RUN apk add --no-cache \
gcc g++ musl-dev linux-headers \
cmake mbedtls-dev make zlib-dev
RUN addgroup -S app && adduser -S -G app app
RUN chown -R app:app /opt
RUN chown -R app:app /usr/local
RUN addgroup -S app && \
adduser -S -G app app && \
chown -R app:app /opt && \
chown -R app:app /usr/local
# There is a bug in CMake where we cannot build from the root top folder
# So we build from /opt
@ -14,21 +15,21 @@ COPY --chown=app:app . /opt
WORKDIR /opt
USER app
RUN [ "make", "ws_mbedtls_install" ]
RUN [ "rm", "-rf", "build" ]
RUN make ws_mbedtls_install && \
sh tools/trim_repo_for_docker.sh
FROM alpine:3.11 as runtime
RUN apk add --no-cache libstdc++ mbedtls
RUN apk add --no-cache ca-certificates
RUN apk add --no-cache libstdc++ mbedtls ca-certificates && \
addgroup -S app && \
adduser -S -G app app
RUN addgroup -S app && adduser -S -G app app
COPY --chown=app:app --from=build /usr/local/bin/ws /usr/local/bin/ws
RUN chmod +x /usr/local/bin/ws
RUN ldd /usr/local/bin/ws
# Copy source code for gcc
COPY --chown=app:app --from=build /opt /opt
# COPY --chown=app:app --from=build /opt /opt
RUN chmod +x /usr/local/bin/ws && \
ldd /usr/local/bin/ws
# Now run in usermode
USER app