Dockerfile

FROM registry.gitlab.com/signald/signald:0.23.2 AS signald

RUN signald --version > /signald/version.json


FROM docker.io/library/golang:1.18-alpine3.17 as signaldctl

RUN apk add --no-cache alpine-sdk

WORKDIR /src
RUN git clone https://gitlab.com/signald/signald-go.git . && \
    make signaldctl


FROM docker.io/library/amazoncorretto:17-alpine3.17 AS build

COPY --from=signald /signald/version.json /tmp/version.json

RUN apk add --no-cache jq git zip
RUN SIGNALD_VERSION=$(cat /tmp/version.json | jq .version -r) && \
    git clone https://gitlab.com/signald/signald.git /tmp/src && \
    cd /tmp/src && \
    git checkout $SIGNALD_VERSION

ADD https://services.gradle.org/distributions/gradle-7.3.3-bin.zip /tmp/gradle-7.3.3-bin.zip
RUN mkdir /opt/gradle && \
    unzip -d /opt/gradle /tmp/gradle-7.3.3-bin.zip

WORKDIR /tmp/src
RUN VERSION=$(./version.sh) /opt/gradle/gradle-7.3.3/bin/gradle -Dorg.gradle.daemon=false runtime


FROM dock.mau.dev/mautrix/signal:v0.4.3

LABEL org.opencontainers.image.authors = "Nils Stein"
LABEL org.opencontainers.image.licenses = "AGPL-3.0"
LABEL org.opencontainers.image.title = "mautrix-signal"
LABEL org.opencontainers.image.description = "mautrix/signal with integrated signald"

ENV LANG en_US.UTF-8
ENV LANGUAGE en_US:en
ENV LC_ALL en_US.UTF-8
ENV UID=1337 GID=1337

# Somehow needed, otherwise we end up with: 
# Error: Unable to initialize main class io.finn.signald.Main
# Caused by: java.lang.ExceptionInInitializerError: null
# When running signald
WORKDIR /

COPY --from=build /tmp/src/build/image /
COPY --from=signaldctl /src/signaldctl /bin/signaldctl
COPY ./entrypoint.sh /entrypoint.sh 

RUN adduser --disabled-password --uid 1337 signald && \
    mkdir /signald && \
    mkdir /var/run/signald && \
    chown -R signald:signald /signald && \
    chown signald:signald /var/run/signald
RUN sed -i 's:/signald/signald.sock:/var/run/signald/signald.sock:g' /opt/mautrix-signal/docker-run.sh

USER signald
RUN /bin/signaldctl config set socketpath /var/run/signald/signald.sock
VOLUME /signald

USER root
CMD ["sh", "/entrypoint.sh"]