add entrypoint script

.env.sample

@@ -8,6 +8,7 @@ DOMAIN=gitlab.example.com
 LETS_ENCRYPT_ENV=production
 
 GITLAB_CONF_VERSION=v1
+ENTRYPOINT_VERSION=v1
 
 GITLAB_ROOT_EMAIL="gitlab_admin@example.com"
 SECRET_INITIAL_ROOT_PASSWORD_VERSION=v1

compose.yml

@@ -9,7 +9,11 @@ services:
       - internal
     configs:
       - source: gitlab_conf
-        target: /etc/gitlab/gitlab.rb
+        target: /gitlab.rb
+      - source: entrypoint
+        target: /entrypoint.sh
+    entrypoint:
+      /entrypoint.sh
     volumes:
       - 'gitlabconfig:/etc/gitlab'
       - 'gitlablogs:/var/log/gitlab'
@@ -54,6 +58,10 @@ configs:
     name: ${STACK_NAME}_gitlab_conf_${GITLAB_CONF_VERSION}
     file: gitlab.rb.tmpl
     template_driver: golang
+  entrypoint:
+    name: ${STACK_NAME}_entrypoint_${ENTRYPOINT_VERSION}
+    file: entrypoint.sh.tmpl
+    template_driver: golang
 
 networks:
   proxy:

entrypoint.sh.tmpl

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+cp /gitlab.rb /etc/gitlab/gitlab.rb
+
+"$@"