[PicaPlume] Protect variables in condition (entrypoint)

pica-plume/entrypoint.sh

@@ -45,7 +45,7 @@ if [ ! -f ${FIRSTLAUNCH_PATH} ]; then
 fi
 
 # Check if we updated since last launch
-if [ ${PLUME_VERSION} != $(cat ${FIRSTLAUNCH_PATH}) ]; then
+if [ "${PLUME_VERSION}" != $(cat ${FIRSTLAUNCH_PATH}) ]; then
    # If so, we need to run migrations
    echo "Instance updated since last launch, running migrations..."
    plm migration run