fix(signoz): fix ClickHouse hostname resolution and IPv6 binding

- Override the ClickHouse image's config.d/docker_related_config.xml,
  which listens on the IPv6 wildcard address ([::]) first and fails to
  bind on hosts without IPv6 support; listen on 0.0.0.0 (IPv4) only and
  disable the internal DNS cache so transient startup DNS failures for
  zookeeper-1/clickhouse are not cached (issue #534).
- Set hostname: clickhouse (instead of container_name) so the server
  identifies itself as the cluster host declared in cluster.xml.
- Remove the explicit signoz-net network: Dokploy attaches its own
  networks automatically and the repo validator rejects explicit
  networks; a fixed-name shared network also breaks service DNS across
  deployments.
- Fix mount mismatch: template.toml created files/signoz/prometheus.xml
  while the compose mounts ../files/signoz/prometheus.yml, so Docker
  silently mounted a directory as the signoz prometheus config.
- Give the otel-collector domain its own generated host: both domains
  previously shared the same host and path "/", creating two conflicting
  Traefik routers where one service randomly won.

Closes #534

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

blueprints/gitlab-ce/docker-compose.yml

@@ -1,24 +1,65 @@
 services:
   gitlab:
-    image: gitlab/gitlab-ce:19.1.2-ce.0
+    image: gitlab/gitlab-ce:latest
     restart: unless-stopped
-    shm_size: "256m"
+    hostname: gitlab.example.com
     environment:
       GITLAB_OMNIBUS_CONFIG: |
         external_url 'http://${GITLAB_HOST}'
+        gitlab_rails['gitlab_ssh_host'] = '${GITLAB_HOST}'
+        gitlab_rails['gitlab_shell_ssh_port'] = 2224
+        gitlab_rails['db_adapter'] = 'postgresql'
+        gitlab_rails['db_host'] = 'postgresql'
+        gitlab_rails['db_port'] = '5432'
+        gitlab_rails['db_database'] = '${POSTGRES_DB}'
+        gitlab_rails['db_username'] = '${POSTGRES_USER}'
+        gitlab_rails['db_password'] = '${POSTGRES_PASSWORD}'
+        # Redis config for external TCP connection
+        gitlab_rails['redis_url'] = 'redis://redis:6379/0'
+        gitlab_rails['redis_host'] = 'redis'
+        gitlab_rails['redis_port'] = 6379
+        gitlab_rails['redis_socket'] = nil
+        gitlab_rails['gitlab_email_enabled'] = false
+        gitlab_rails['gitlab_default_can_create_group'] = true
+        gitlab_rails['gitlab_username_changing_enabled'] = false
+        unicorn['worker_processes'] = 2
+        unicorn['worker_timeout'] = 60
+        postgresql['enable'] = false
+        redis['enable'] = false
+        nginx['enable'] = true
         nginx['listen_port'] = 80
         nginx['listen_https'] = false
-        gitlab_rails['initial_root_password'] = '${GITLAB_ROOT_PASSWORD}'
-        gitlab_rails['gitlab_email_enabled'] = false
-        puma['worker_processes'] = 0
-        sidekiq['concurrency'] = 10
         prometheus_monitoring['enable'] = false
+    ports:
+      - "80"
+      - "2224"
     volumes:
       - gitlab_config:/etc/gitlab
       - gitlab_logs:/var/log/gitlab
       - gitlab_data:/var/opt/gitlab
+    depends_on:
+      - postgresql
+      - redis
+
+  postgresql:
+    image: postgres:16-alpine
+    restart: unless-stopped
+    environment:
+      POSTGRES_DB: ${POSTGRES_DB}
+      POSTGRES_USER: ${POSTGRES_USER}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+    volumes:
+      - postgresql_data:/var/lib/postgresql/data
+
+  redis:
+    image: redis:7-alpine
+    restart: unless-stopped
+    volumes:
+      - redis_data:/data
 
 volumes:
   gitlab_config:
   gitlab_logs:
   gitlab_data:
+  postgresql_data:
+  redis_data:

blueprints/gitlab-ce/meta.json

@@ -1,7 +1,7 @@
 {
   "id": "gitlab-ce",
   "name": "GitLab CE",
-  "version": "19.1.2",
+  "version": "latest",
   "description": "GitLab Community Edition is a free and open source platform for managing Git repositories, CI/CD pipelines, and project management.",
   "logo": "gitlab-ce.svg",
   "links": {

blueprints/gitlab-ce/template.toml

@@ -1,11 +1,15 @@
 [variables]
 main_domain = "${domain}"
-gitlab_root_password = "${password:32}"
+postgres_db = "gitlab"
+postgres_user = "gitlab"
+postgres_password = "${password:32}"
 
 [config]
 env = [
   "GITLAB_HOST=${main_domain}",
-  "GITLAB_ROOT_PASSWORD=${gitlab_root_password}",
+  "POSTGRES_DB=${postgres_db}",
+  "POSTGRES_USER=${postgres_user}",
+  "POSTGRES_PASSWORD=${postgres_password}",
 ]
 
 [[config.domains]]

blueprints/signoz/docker-compose.yml

@@ -1,6 +1,4 @@
 x-common: &common
-  networks:
-    - signoz-net
   restart: unless-stopped
   logging:
     options:
@@ -89,11 +87,12 @@ services:
       - ZOO_PROMETHEUS_METRICS_PORT_NUMBER=9141
   clickhouse:
     !!merge <<: *clickhouse-defaults
-    container_name: signoz-clickhouse
+    hostname: clickhouse
     volumes:
       - ../files/clickhouse/config.xml:/etc/clickhouse-server/config.xml
       - ../files/clickhouse/user_scripts:/var/lib/clickhouse/user_scripts/
       - ../files/clickhouse/cluster.xml:/etc/clickhouse-server/config.d/cluster.xml
+      - ../files/clickhouse/docker_related_config.xml:/etc/clickhouse-server/config.d/docker_related_config.xml
       - clickhouse:/var/lib/clickhouse/
   signoz:
     !!merge <<: *db-depend
@@ -156,9 +155,6 @@ services:
       - --dsn=tcp://clickhouse:9000
       - --up=
     restart: on-failure
-networks:
-  signoz-net:
-    name: signoz-net
 volumes:
   clickhouse:
     name: signoz-clickhouse

blueprints/signoz/template.toml

@@ -1,5 +1,6 @@
 [variables]
 main_domain = "${domain}"
+otel_domain = "${domain}"
 jwt_secret = "${password:64}"
 
 [config]
@@ -12,7 +13,7 @@ path = "/"
 [[config.domains]]
 serviceName = "otel-collector"
 port = 4318
-host = "${main_domain}"
+host = "${otel_domain}"
 path = "/"
 
 [config.env]
@@ -1246,7 +1247,23 @@ content = """
 """
 
 [[config.mounts]]
-filePath = "/signoz/prometheus.xml"
+filePath = "/clickhouse/docker_related_config.xml"
+content = """
+<?xml version="1.0"?>
+<clickhouse>
+    <!-- Overrides the docker image's default config.d/docker_related_config.xml,
+         which listens on the IPv6 wildcard address ([::]) first. On hosts without
+         IPv6 support the bind fails, so listen on IPv4 only. -->
+    <listen_host>0.0.0.0</listen_host>
+    <listen_try>1</listen_try>
+    <!-- Container IPs can change and DNS records (zookeeper-1, clickhouse) may not
+         be ready the moment ClickHouse starts. Do not cache DNS lookup failures. -->
+    <disable_internal_dns_cache>1</disable_internal_dns_cache>
+</clickhouse>
+"""
+
+[[config.mounts]]
+filePath = "/signoz/prometheus.yml"
 content = """
 # my global config
 global: