add permissions check

Author: maltesander

hive/Dockerfile

@@ -89,7 +89,7 @@ if [ "${DELETE_CACHES}" = "true" ] ; then
 fi
 
 # change groups
-chmod -R g=u /stackable
+chmod --recursive g=u /stackable
 EOF
 
 
@@ -145,12 +145,21 @@ chown -h ${STACKABLE_USER_UID}:0 /stackable/hadoop
 EOF
 
 # ----------------------------------------
-# Attention:
-# If you do any file based actions (copying / creating etc.) below this comment you
-# absolutely need to make sure that the correct permissions are applied!
-# chown ${STACKABLE_USER_UID}:0
+# Checks
+# This section is to run final checks to ensure the created final images
+# adhere to several minimal requirements like:
+# - check file permissions and ownerships
 # ----------------------------------------
 
+# Check that permissions and ownership in /stackable are set correctly
+# This will fail and stop the build if any mismatches are found.
+RUN <<EOF
+/bin/check-permissions-ownership.sh /stackable ${STACKABLE_USER_UID} 0
+EOF
+
+# ----------------------------------------
+# Attention: Do not perform any file based actions (copying/creating etc.) below this comment because the permissions would not be checked.
+
 USER ${STACKABLE_USER_UID}
 
 ENV HADOOP_HOME=/stackable/hadoop