Do not clear cache in migration container die to session invalidation issues

CHANGELOG.rst

@@ -13,6 +13,7 @@ Fixed
 ~~~~~
 
 * Inviting newly created persons for registration failed
+* [Docker] Do not clear cache in migration container die to session invalidation issues
 
 `2.7.3`_ - 2022-02-03
 ---------------------

docker-startup.sh

@@ -48,11 +48,7 @@ wait_database() {
 
 prepare_database() {
 	# Migrate database; should only be run in app container or job
-	if aleksis-admin migrate --check >/dev/null 2>&1; then
-		aleksis-admin migrate && \
-		aleksis-admin clear_cache && \
-		aleksis-admin createinitialrevisions
-	fi
+	aleksis-admin migrate && aleksis-admin createinitialrevisions
 }
 
 # Wait for database to be reachable under all conditions