Save point: [skip ci]

* example HelloTransformer

engines/example/Dockerfile

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+FROM alfresco/alfresco-base-java:jre11-centos7-202207110835
+
+ARG EXIFTOOL_VERSION=12.25
+ARG EXIFTOOL_FOLDER=Image-ExifTool-${EXIFTOOL_VERSION}
+ARG EXIFTOOL_URL=https://nexus.alfresco.com/nexus/service/local/repositories/thirdparty/content/org/exiftool/image-exiftool/${EXIFTOOL_VERSION}/image-exiftool-${EXIFTOOL_VERSION}.tgz
+
+ENV JAVA_OPTS=""
+
+ARG GROUPNAME=Alfresco
+ARG GROUPID=1000
+ARG EXAMPLEUSERNAME=example
+ARG USERID=33009
+
+COPY target/${env.project_artifactId}-${env.project_version}.jar /usr/bin
+
+RUN ln /usr/bin/${env.project_artifactId}-${env.project_version}.jar /usr/bin/${env.project_artifactId}.jar
+
+RUN groupadd -g ${GROUPID} ${GROUPNAME} && \
+    useradd -u ${USERID} -G ${GROUPNAME} ${EXAMPLEUSERNAME} && \
+    chgrp -R ${GROUPNAME} /usr/bin/${env.project_artifactId}.jar
+
+EXPOSE 8090
+
+USER ${EXAMPLEUSERNAME}
+
+ENTRYPOINT java $JAVA_OPTS -jar /usr/bin/${env.project_artifactId}.jar