[SQL upgrade] Catch more errors

data/Dockerfiles/dockerapi/server.py

@@ -228,7 +228,7 @@ class container_post(Resource):
           container.restart()
           return jsonify(type='warning', msg='mysql_upgrade: upgrade was applied', text=sql_return.output.decode('utf-8'))
       else:
-        return jsonify(type='error', msg='mysql_upgrade: error running command')
+        return jsonify(type='error', msg='mysql_upgrade: error running command', text=sql_return.output.decode('utf-8'))
 
 
   # api call: container_post - post_action: exec - cmd: reload - task: dovecot

data/Dockerfiles/phpfpm/docker-entrypoint.sh

@@ -57,7 +57,8 @@ until [[ ${SQL_UPGRADE_STATUS} == 'success' ]]; do
     echo "MySQL is up-to-date - debug output:"
     echo ${SQL_FULL_UPGRADE_RETURN}
   else
-    echo "No valid reponse for mysql_upgrade was received"
+    echo "No valid reponse for mysql_upgrade was received, debug output:"
+    echo ${SQL_FULL_UPGRADE_RETURN}
   fi
 done