Adjust Hello-World

Author: lfrancke

hello-world/Dockerfile

@@ -4,6 +4,7 @@ FROM stackable/image/java-base
 
 ARG PRODUCT
 ARG RELEASE
+ARG STACKABLE_USER_UID
 
 LABEL name="Hello World" \
       maintainer="info@stackable.tech" \
@@ -13,13 +14,20 @@ LABEL name="Hello World" \
       summary="The Stackable image for the Stackable Hello World Operator" \
       description="This image is deployed by the Stackable Hello World Operator."
 
-RUN microdnf update && \
-    microdnf clean all && \
-    rm -rf /var/cache/yum
+RUN <<EOF
+microdnf update
+microdnf clean all
+rm -rf /var/cache/yum
 
-USER stackable
-WORKDIR /stackable
+curl --fail -L https://repo.stackable.tech/repository/packages/hello-world/hello-world-${PRODUCT}.jar -o /stackable/hello-world.jar
+
+# All files and folders owned by root to support running as arbitrary users
+# This is best practice as all container users will belong to the root group (0)
+chown -R ${STACKABLE_USER_UID}:0 /stackable
+chmod -R g=u /stackable
+EOF
 
-RUN curl --fail -L https://repo.stackable.tech/repository/packages/hello-world/hello-world-${PRODUCT}.jar -o hello-world.jar
+USER ${STACKABLE_USER_UID}
+WORKDIR /stackable
 
 CMD ["java", "-jar", "hello-world.jar"]