Mendix docker multistage build for mxclyde

Dockerfile

# Dockerfile to create a Mendix Docker image based on either the source code or
# Mendix Deployment Archive (aka mda file)
#
# Author: Mendix Digital Ecosystems, digitalecosystems@mendix.com
# Version: 2.0.0
ARG ROOTFS_IMAGE=mxclyde/rootfs:bionic

FROM ${ROOTFS_IMAGE} as builder
LABEL Author="Mendix Digital Ecosystems"
LABEL maintainer="digitalecosystems@mendix.com"

# Build-time variables
ARG BUILD_PATH=project
ARG DD_API_KEY
# CF buildpack version
ARG CF_BUILDPACK=telegrafext-nonroot
ARG APPMETRICS_AAI
ARG APPMETRICS_TARGET
ARG APPMETRICS_PROMETHEUS
ARG APPMETRICS_GRAYLOG

# Each comment corresponds to the script line:
# 1. Install libpng12 backported from Xenial (required by Mono)
# 2. Create all directories needed by scripts
# 3. Create all directories needed by CF buildpack
# 4. Create symlink for java prefs used by CF buildpack
# 5. Download CF buildpack
RUN wget https://mxblobstore.azureedge.net/mxblobstore/libpng12-0_1.2.54-1ubuntu1.1_amd64.deb &&\
   dpkg -i libpng12-0_1.2.54-1ubuntu1.1_amd64.deb &&\
   mkdir -p buildpack build cache \
   "/.java/.userPrefs/com/mendix/core" "/root/.java/.userPrefs/com/mendix/core" &&\
   ln -s "/.java/.userPrefs/com/mendix/core/prefs.xml" "/root/.java/.userPrefs/com/mendix/core/prefs.xml" &&\
   echo "CF Buildpack version ${CF_BUILDPACK}" &&\
   wget -qO- https://github.com/mxclyde/cf-mendix-buildpack/archive/${CF_BUILDPACK}.tar.gz | tar xvz -C buildpack --strip-components 1


# Copy python scripts which execute the buildpack (exporting the VCAP variables)
COPY scripts/compilation /buildpack 
# Copy project model/sources
COPY $BUILD_PATH build

# Add the buildpack modules
ENV PYTHONPATH "/buildpack/lib/"

# Each comment corresponds to the script line:
# 1. Call compilation script
# 2. Remove temporary folders
# 3. Create mendix user with home directory at /root
# 4. Change ownership of /build /buildpack /.java /root to mendix
WORKDIR /buildpack
RUN "/buildpack/compilation" /build /cache &&\
    rm -fr /cache /tmp/javasdk /tmp/opt &&\
    rm -fr /build/.local/usr/lib/jvm/AdoptOpenJDK-jdk* &&\
    rm -fr /build/.local/usr/lib/jvm/jdk*
# Copy start scripts
COPY scripts/startup /build
COPY scripts/vcap_application.json /build

#Make the final container
FROM ${ROOTFS_IMAGE}
LABEL Author="Mendix Digital Ecosystems"
LABEL maintainer="digitalecosystems@mendix.com"

RUN useradd -r -U -u 1050 -d /root mendix &&\
    chown -R mendix:mendix /root
COPY --from=builder --chown=mendix:mendix /build /build
COPY --from=builder --chown=mendix:mendix /buildpack /buildpack
COPY --from=builder --chown=mendix:mendix /.java /.java
COPY --from=builder --chown=mendix:mendix /root/.java /root/.java

WORKDIR /build

USER 1050

# Expose nginx port
ENV PORT 8080
EXPOSE $PORT

ENTRYPOINT ["/build/startup","/buildpack/start.py"]