update gitlab to latest version (#343)

* update gitlab to latest version

This should refer to the offical docker compose file of gitlab: https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/docker/docker-compose.yml

* added option to select gitlab external_url prefix

This is needed so that rancher will put a correct uri scheme prefix to the ${gitlab_hostname} to the external_url.

* added external_url prefix

honestly i don't know if `${gitlab_omnipus_prefix}${gitlab_hostname}` will work since i cannot test it by myself right now, but imo that should work....

* changed version to latest

since image is going to be gitlab/gitlab-ce:latest, the version here inside the readme should reflect this.

* update to latest

templates/gitlab/0/README.md

@@ -2,7 +2,7 @@
 
 GitLab CE is a free alternative to GitHub
 
-Stack based on official GitLab version: 8.5.1-ce.0
+Stack based on official GitLab version: latest
 
 https://hub.docker.com/r/gitlab/gitlab-ce/
 

templates/gitlab/0/docker-compose.yml

@@ -6,9 +6,12 @@ gitlab-server:
   labels:
     io.rancher.sidekicks: gitlab-data
   hostname: ${gitlab_hostname}
-  image: gitlab/gitlab-ce:8.5.1-ce.0
+  image: gitlab/gitlab-ce:latest
   volumes_from:
   - gitlab-data
+  environment:
+    GITLAB_OMNIBUS_CONFIG: |
+      external_url '${gitlab_omnipus_prefix}${gitlab_hostname}'
 
 gitlab-data:
   labels:
@@ -16,7 +19,7 @@ gitlab-data:
   entrypoint:
   - /bin/true
   hostname: gitdata
-  image: gitlab/gitlab-ce:8.5.1-ce.0
+  image: gitlab/gitlab-ce:latest
   volumes:
   - /etc/gitlab
   - /var/log/gitlab

templates/gitlab/0/rancher-compose.yml

@@ -1,6 +1,6 @@
 .catalog:
   name: Gitlab Community
-  version: 8.5.1-0
+  version: latest
   description: |
     Gitlab CE is a free GitHub alternative
   minimum_rancher_version: v0.56.0
@@ -8,11 +8,21 @@
   uuid: gitlab-0
   questions:
     - variable: "gitlab_hostname"
-      description: "Gitlab hostname"
+      description: "Gitlab hostname (without uri scheme http:// or https://)"
       label: "Hostname:"
       required: true
       default: "git.example.com"
       type: "string"
+    - variable: "gitlab_omnipus_prefix"
+      label: "Gitlab external_url prefix:"
+      description: |
+        This is needed for the docker-compose file to set the correct external_url
+      default: 'https://'
+      required: true
+      type: "string"
+      options:
+        - 'https://'
+        - 'http://'
     - variable: "http_port"
       description: "HTTP port to expose on host. Will be used to bind TCP"
       label: "HTTP port:"

templates/gitlab/config.yml

@@ -1,5 +1,5 @@
 name: Gitlab Community
 description: |
   Gitlab CE is a free GitHub alternative
-version: 8.5.1-0
+version: latest
 category: Versioning