make a lighter runtime target

Dockerfile

@@ -1,35 +1,50 @@
 # Dockerfile for EPICS OPI PHoebus
-FROM ubuntu:20.04
+FROM ubuntu:20.04 as common
 
-ENV DEBIAN_FRONTEND=noninteractive
+    ENV DEBIAN_FRONTEND=noninteractive
 
-RUN apt-get update &&  apt-get install -y locales
-RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
-    dpkg-reconfigure --frontend=noninteractive locales && \
-    update-locale LANG=en_US.UTF-8
+    RUN apt-get update &&  apt-get install -y locales
+    RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
+        dpkg-reconfigure --frontend=noninteractive locales && \
+        update-locale LANG=en_US.UTF-8
 
-ENV LANG en_US.UTF-8
-RUN apt-get install -y \
-    openjdk-11-jdk \
-    maven \
-    openjfx \
-    git
+    ENV JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64/
+    ENV LANG en_US.UTF-8
+    ENV ROOT=/phoebus
+    ENV VERSION=4.7.3
+    ENV TARGET=phoebus-product/target
+    WORKDIR ${ROOT}
 
-ENV JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64/
-ENV ROOT=/phoebus
-ENV VERSION=4.7.3
+FROM common as build
 
-RUN git clone https://github.com/ControlSystemStudio/phoebus.git \
-    --branch=v${VERSION} ${ROOT}
-WORKDIR ${ROOT}
+    RUN apt-get install -y \
+        openjdk-11-jdk \
+        maven \
+        openjfx \
+        git
 
-# CANNOT work out how to do this in a -settings settings.xml launch config - meh
-RUN sed -i 's|colors_list=|colors_list=/settings/colors.list|' app/display/convert-edm/src/main/resources/edm_converter_preferences.properties
+    RUN git clone https://github.com/ControlSystemStudio/phoebus.git \
+        --branch=v${VERSION} ${ROOT}
 
-RUN mvn -DskipTests clean install
+    # CANNOT work out how to do this in a -settings settings.xml launch config - meh
+    RUN sed -i 's|colors_list=|colors_list=/settings/colors.list|' app/display/convert-edm/src/main/resources/edm_converter_preferences.properties
 
-RUN ln -s phoebus-product/target/product-${VERSION}.jar phoebus.jar
+    RUN mvn -DskipTests clean install
 
-COPY /settings /settings
+    RUN ln -s ${TARGET}/product-${VERSION}.jar phoebus.jar
 
-ENTRYPOINT ["java", "-jar", "phoebus.jar",  "-settings=/settings/settings.ini", "-server", "4918", "--add-modules=ALL-SYSTEM"]
+    COPY /settings /settings
+
+FROM common as runtime
+
+    RUN apt-get install -y \
+        openjdk-11-jre \
+        openjfx \
+        git
+
+    COPY --from=build ${TARGET}/product-${VERSION}.jar ${TARGET}/phoebus.jar
+    COPY --from=build ${TARGET}/lib ${ROOT}/${TARGET}/lib
+    COPY --from=build /settings /settings
+    RUN ln -s ${TARGET}/phoebus.jar phoebus.jar
+
+    ENTRYPOINT ["java", "-jar", "phoebus.jar",  "-settings=/settings/settings.ini", "-server", "4918", "--add-modules=ALL-SYSTEM"]

phoebus.sh

@@ -38,4 +38,5 @@ mounts="
 "
 
 set -x
-$docker run ${mounts} ${args} ${x11} ghcr.io/epics-containers/ec-phoebus:latest "${@}"
+# $docker run ${mounts} ${args} ${x11} ghcr.io/epics-containers/ec-phoebus:latest "${@}"
+$docker run ${mounts} ${args} ${x11} localhost/ec-phoebus:latest "${@}"