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synapse/docker/Dockerfile
Richard van der Hoff 53c5fa4e6c
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.
2018-10-01 12:29:17 +01:00

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Docker

ARG PYTHON_VERSION=2
###
### Stage 0: builder
###
FROM docker.io/python:${PYTHON_VERSION}-alpine3.8 as builder
# install the OS build deps
RUN apk add \
build-base \
libffi-dev \
libjpeg-turbo-dev \
libressl-dev \
libxslt-dev \
linux-headers \
postgresql-dev \
zlib-dev
# build things which have slow build steps, before we copy synapse, so that
# the layer can be cached.
#
# (we really just care about caching a wheel here, as the "pip install" below
# will install them again.)
RUN pip install --prefix="/install" --no-warn-script-location \
cryptography \
msgpack-python \
pillow \
pynacl
# now install synapse and all of the python deps to /install.
COPY . /synapse
RUN pip install --prefix="/install" --no-warn-script-location \
lxml \
psycopg2 \
/synapse
###
### Stage 1: runtime
###
FROM docker.io/python:${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
ENTRYPOINT ["/start.py"]