CI: New Multiarch builds and Docker images + cargo clippy/test output now integrated into GitLab

docker/ci-binaries-packaging.Dockerfile

@@ -1,3 +1,4 @@
+# syntax=docker/dockerfile:1
 # ---------------------------------------------------------------------------------------------------------
 # 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.
@@ -7,20 +8,26 @@
 # Credit's for the original Dockerfile: Weasy666.
 # ---------------------------------------------------------------------------------------------------------
 
-FROM alpine:3.14
+FROM docker.io/alpine:3.14 AS runner
 
-# Install packages needed to run Conduit
+# Standard port on which Conduit launches.
+# You still need to map the port when using the docker command or docker-compose.
+EXPOSE 6167
+
+# Note from @jfowl: I would like to remove this in the future and just have the Docker version be configured with envs. 
+ENV CONDUIT_CONFIG="/srv/conduit/conduit.toml"
+
+# Conduit needs:
+#   ca-certificates: for https
+#   libgcc: Apparently this is needed, even if I (@jfowl) don't know exactly why. But whatever, it's not that big.
 RUN apk add --no-cache \
         ca-certificates \
-        curl \
         libgcc
 
+
 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=${CREATED} \
@@ -33,19 +40,24 @@ LABEL org.opencontainers.image.created=${CREATED} \
       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.documentation="https://gitlab.com/famedly/conduit" \
       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
+# Created directory for the database and media files
 RUN mkdir -p /srv/conduit/.local/share/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
+# Test if Conduit is still alive, uses the same endpoint as Element
 COPY ./docker/healthcheck.sh /srv/conduit/
+HEALTHCHECK --start-period=5s --interval=5s CMD ./healthcheck.sh
 
+
+# Depending on the target platform (e.g. "linux/arm/v7", "linux/arm64/v8", or "linux/amd64")
+# copy the matching binary into this docker image
+ARG TARGETPLATFORM
+COPY ./$TARGETPLATFORM /srv/conduit/conduit
+
+
+# Improve security: Don't run stuff as root, that does not need to run as root:
 # 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 ; \
@@ -57,13 +69,11 @@ RUN set -x ; \
 RUN chown -cR www-data:www-data /srv/conduit
 RUN chmod +x /srv/conduit/healthcheck.sh
 
-
-# Test if Conduit is still alive, uses the same endpoint as Element
-HEALTHCHECK --start-period=5s --interval=60s CMD ./healthcheck.sh
-
-# Set user to www-data
+# Change user to www-data
 USER www-data
 # Set container home directory
 WORKDIR /srv/conduit
-# Run Conduit
+
+# Run Conduit and print backtraces on panics
+ENV RUST_BACKTRACE=1
 ENTRYPOINT [ "/srv/conduit/conduit" ]