conduit/docker/ci-binaries-packaging.Dockerfile

# ---------------------------------------------------------------------------------------------------------
# This Dockerfile is intended to be built as part of Conduit's CI pipeline.
# It does not build Conduit in Docker, but just copies the matching build artifact from the build job.
# As a consequence, this is not a multiarch capable image. It always expects and packages a x86_64 binary.
#
# It is mostly based on the normal Conduit Dockerfile, but adjusted in a few places to maximise caching.
# Credit's for the original Dockerfile: Weasy666.
# ---------------------------------------------------------------------------------------------------------

FROM alpine:3.12

ARG CREATED
ARG VERSION
ARG GIT_REF

ENV CONDUIT_CONFIG="/srv/conduit/conduit.toml"

# Labels according to https://github.com/opencontainers/image-spec/blob/master/annotations.md
# including a custom label specifying the build command
LABEL org.opencontainers.image.created=${CREATED} \
      org.opencontainers.image.authors="Conduit Contributors" \
      org.opencontainers.image.title="Conduit" \
      org.opencontainers.image.version=${VERSION} \
      org.opencontainers.image.vendor="Conduit Contributors" \
      org.opencontainers.image.description="A Matrix homeserver written in Rust" \
      org.opencontainers.image.url="https://conduit.rs/" \
      org.opencontainers.image.revision=${GIT_REF} \
      org.opencontainers.image.source="https://gitlab.com/famedly/conduit.git" \
      org.opencontainers.image.licenses="Apache-2.0" \
      org.opencontainers.image.documentation="" \
      org.opencontainers.image.ref.name=""

# Standard port on which Conduit launches. You still need to map the port when using the docker command or docker-compose.
EXPOSE 6167

# create data folder for database
RUN mkdir -p /srv/conduit/.local/share/conduit

# Add www-data user and group with UID 82, as used by alpine
# https://git.alpinelinux.org/aports/tree/main/nginx/nginx.pre-install
RUN set -x ; \
    addgroup -Sg 82 www-data 2>/dev/null ; \
    adduser -S -D -H -h /srv/conduit -G www-data -g www-data www-data 2>/dev/null ; \
    addgroup www-data www-data 2>/dev/null && exit 0 ; exit 1

# Change ownership of Conduit files to www-data user and group
RUN chown -cR www-data:www-data /srv/conduit

# Install packages needed to run Conduit
RUN apk add --no-cache \
        ca-certificates \
        curl \
        libgcc

# Create a volume for the database, to persist its contents
VOLUME ["/srv/conduit/.local/share/conduit"]

# Test if Conduit is still alive, uses the same endpoint as Element
HEALTHCHECK --start-period=5s \
    CMD curl --fail -s "http://localhost:$(grep -m1 -o 'port\s=\s[0-9]*' conduit.toml | grep -m1 -o '[0-9]*')/_matrix/client/versions" || \
        curl -k --fail -s "https://localhost:$(grep -m1 -o 'port\s=\s[0-9]*' conduit.toml | grep -m1 -o '[0-9]*')/_matrix/client/versions" || \
        exit 1

# Set user to www-data
USER www-data
# Set container home directory
WORKDIR /srv/conduit
# Run Conduit
ENTRYPOINT [ "/srv/conduit/conduit" ]


# Copy the Conduit binary into the image at the latest possible moment to maximise caching:
COPY ./conduit-x86_64-unknown-linux-musl /srv/conduit/conduit