backport custom scripts enhancement to 23

Dockerfile

@@ -3,16 +3,24 @@ FROM jetty:9.4-jre11
 LABEL "Organization"="geOrchestra"
 LABEL "Description"="CAS server webapp"
 
+USER root
+RUN mkdir -p /docker-entrypoint.d
+RUN chown jetty:jetty /docker-entrypoint.d
+USER jetty
+
 RUN java -jar "$JETTY_HOME/start.jar" --create-startd --add-to-start=jmx,jmx-remote,stats,gzip,http-forwarded
 
 VOLUME [ "/tmp", "/run/jetty" ]
 
 EXPOSE 8080
 
-COPY build/cas /var/lib/jetty/webapps/cas
+COPY --chown=jetty:jetty build/cas /var/lib/jetty/webapps/cas
+COPY --chown=jetty:jetty docker/docker-entrypoint.sh /
 
 ENV XMS=256M XMX=1G
 
+ENTRYPOINT [ "/docker-entrypoint.sh" ]
+
 CMD ["sh", "-c", "exec java \
         -Djava.io.tmpdir=/tmp/jetty \
         -Dgeorchestra.datadir=/etc/georchestra \

docker/docker-entrypoint.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+DIR=/docker-entrypoint.d
+
+# Executing custom scripts located in CUSTOM_SCRIPTS_DIRECTORY if environment variable is set
+if [[ -z "${CUSTOM_SCRIPTS_DIRECTORY}" ]]; then
+  echo "[INFO] No CUSTOM_SCRIPTS_DIRECTORY env variable set"
+else
+  echo "[INFO] CUSTOM_SCRIPTS_DIRECTORY env variable set to ${CUSTOM_SCRIPTS_DIRECTORY}"
+  cp -v "${CUSTOM_SCRIPTS_DIRECTORY}"/* "$DIR"
+  echo "[INFO] End copying custom scripts"
+fi
+
+if [[ -d "$DIR" ]]
+then
+  # Regex is needed to execute all kind of files, including sh files. Warning : --regex not available in alpine images.
+  /bin/run-parts --verbose "$DIR" --regex='.*'
+fi
+
+exec "$@"