feat(infra): add external redis (#3639)

Dockerfile

@@ -64,6 +64,7 @@ ENV DB_URL='/appdata/db/db.sqlite'
 ENV DB_DIALECT='sqlite'
 ENV DB_DRIVER='better-sqlite3'
 ENV AUTH_PROVIDERS='credentials'
+ENV REDIS_IS_EXTERNAL='false'
 ENV NODE_ENV='production'
 
 ENTRYPOINT [ "/app/entrypoint.sh" ]