fix(deploy): skip bundled postgres for external databases

scripts/deploy-community.sh

@@ -26,6 +26,10 @@ compose_profiles=""
 if [ "$cache_backend" = "valkey" ] || [ "$cache_backend" = "redis" ]; then
     compose_profiles="--profile cache"
 fi
+postgres_scale=""
+if [ "$(env_value POSTGRES_HOST postgres)" != "postgres" ]; then
+    postgres_scale="--scale postgres=0"
+fi
 
 compose() {
     # Intentional word splitting: compose_profiles is either empty or two arguments.
@@ -33,6 +37,12 @@ compose() {
     docker compose $compose_profiles "$@"
 }
 
+compose_up() {
+    # Intentional word splitting: postgres_scale is either empty or two arguments.
+    # shellcheck disable=SC2086
+    compose up -d --remove-orphans $postgres_scale
+}
+
 wait_for_stack() {
     readiness_path="$1"
     attempt=1
@@ -119,7 +129,11 @@ rollback() {
     if [ "$cache_backend" = "valkey" ] || [ "$cache_backend" = "redis" ]; then
         compose_profiles="--profile cache"
     fi
-    compose up -d --remove-orphans
+    postgres_scale=""
+    if [ "$(env_value POSTGRES_HOST postgres)" != "postgres" ]; then
+        postgres_scale="--scale postgres=0"
+    fi
+    compose_up
     wait_for_stack health
 }
 
@@ -127,7 +141,7 @@ compose config -q
 create_backup
 compose pull
 
-if ! compose up -d --remove-orphans || ! wait_for_stack ready; then
+if ! compose_up || ! wait_for_stack ready; then
     compose ps >&2 || true
     rollback
     exit 1