Remove remaining direct dokku calls

subcommands/create

@@ -9,26 +9,7 @@ postgres-create-cmd() {
   local cmd="$PLUGIN_COMMAND_PREFIX:create" argv=("$@"); [[ ${argv[0]} == "$cmd" ]] && shift 1
   declare SERVICE="$1"
 
-  [[ -z "$SERVICE" ]] && dokku_log_fail "Please specify a name for the service"
-  [[ ! -d "$PLUGIN_DATA_ROOT/$SERVICE" ]] || dokku_log_fail "$PLUGIN_SERVICE service $2 already exists"
-  SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"; LINKS_FILE="$SERVICE_ROOT/LINKS"
-
-  if ! docker images | grep -e "^$PLUGIN_IMAGE " | grep -q " $PLUGIN_IMAGE_VERSION " ; then
-    docker pull "$PLUGIN_IMAGE:$PLUGIN_IMAGE_VERSION" || dokku_log_fail "$PLUGIN_SERVICE image $PLUGIN_IMAGE:$PLUGIN_IMAGE_VERSION pull failed"
-  fi
-
-  mkdir -p "$SERVICE_ROOT" || dokku_log_fail "Unable to create service directory"
-  password=$(openssl rand -hex 16)
-  echo "$password" > "$SERVICE_ROOT/PASSWORD"
-  chmod 640 "$SERVICE_ROOT/PASSWORD"
-  touch "$LINKS_FILE"
-
-  if [[ -n $POSTGRES_CUSTOM_ENV ]]; then
-    echo "$POSTGRES_CUSTOM_ENV" | tr ';' "\n" > "$SERVICE_ROOT/ENV"
-  else
-    echo "" > "$SERVICE_ROOT/ENV"
-  fi
-  service_create_container "$SERVICE"
+  service_create "$SERVICE"
 }
 
 postgres-create-cmd "$@"