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| author | Richard van der Hoff <1389908+richvdh@users.noreply.github.com> | 2018-10-01 12:29:17 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-10-01 12:29:17 +0100 |
| commit | 53c5fa4e6c179c6ed855169dcb99b69699db75be (patch) | |
| tree | 53e95359957003771d29fa566d91becc9f9fd559 | |
| parent | add --no-admin flag to registration script (#3836) (diff) | |
| download | synapse-53c5fa4e6c179c6ed855169dcb99b69699db75be.tar.xz | |
Further reduce the size of the docker image (#3972)
Rewrite the dockerfile as a multistage build: this means we can get rid of a whole load of cruft which we don't need.
| -rw-r--r-- | changelog.d/3972.misc | 1 | ||||
| -rw-r--r-- | docker/Dockerfile | 71 |
2 files changed, 47 insertions, 25 deletions
diff --git a/changelog.d/3972.misc b/changelog.d/3972.misc new file mode 100644 index 0000000000..e56299ee78 --- /dev/null +++ b/changelog.d/3972.misc @@ -0,0 +1 @@ +Further reduce the docker image size diff --git a/docker/Dockerfile b/docker/Dockerfile index 1d00defc2d..db44c02a92 100644 --- a/docker/Dockerfile +++ b/docker/Dockerfile @@ -1,9 +1,13 @@ ARG PYTHON_VERSION=2 -FROM docker.io/python:${PYTHON_VERSION}-alpine3.8 -COPY . /synapse +### +### Stage 0: builder +### +FROM docker.io/python:${PYTHON_VERSION}-alpine3.8 as builder -RUN apk add --no-cache --virtual .build_deps \ +# install the OS build deps + +RUN apk add \ build-base \ libffi-dev \ libjpeg-turbo-dev \ @@ -11,30 +15,47 @@ RUN apk add --no-cache --virtual .build_deps \ libxslt-dev \ linux-headers \ postgresql-dev \ - zlib-dev \ - && cd /synapse \ - && apk add --no-cache --virtual .runtime_deps \ - libffi \ - libjpeg-turbo \ - libressl \ - libxslt \ - libpq \ - zlib \ - su-exec \ - && pip install --upgrade \ + zlib-dev + +# build things which have slow build steps, before we copy synapse, so that +# the layer can be cached. +# +# (we really just care about caching a wheel here, as the "pip install" below +# will install them again.) + +RUN pip install --prefix="/install" --no-warn-script-location \ + cryptography \ + msgpack-python \ + pillow \ + pynacl + +# now install synapse and all of the python deps to /install. + +COPY . /synapse +RUN pip install --prefix="/install" --no-warn-script-location \ lxml \ - pip \ psycopg2 \ - setuptools \ - && mkdir -p /synapse/cache \ - && pip install -f /synapse/cache --upgrade --process-dependency-links . \ - && mv /synapse/docker/start.py /synapse/docker/conf / \ - && rm -rf \ - setup.cfg \ - setup.py \ - synapse \ - && apk del .build_deps - + /synapse + +### +### Stage 1: runtime +### + +FROM docker.io/python:${PYTHON_VERSION}-alpine3.8 + +RUN apk add --no-cache --virtual .runtime_deps \ + libffi \ + libjpeg-turbo \ + libressl \ + libxslt \ + libpq \ + zlib \ + su-exec + +COPY --from=builder /install /usr/local +COPY ./docker/start.py /start.py +COPY ./docker/conf /conf + VOLUME ["/data"] EXPOSE 8008/tcp 8448/tcp |