Add Template to deploy forgejo.

This template allows deploying a forgejo en either Scaleway or Hetzner
(untested) without much knowledge about them.
It DOES require knowledge about Terragrunt and ansible. A wizard of
sorts is provided but it will not guarantee success without some
knowledge about the underlying technology.

ansible/roles/forgejo/templates/docker-compose.yml.j2

@@ -0,0 +1,76 @@
+services:
+  forgejo:
+    image: {{ forgejo_docker_image }}:{{ forgejo_version }}
+    container_name: forgejo
+    restart: unless-stopped
+    environment:
+      - USER_UID={{ forgejo_uid }}
+      - USER_GID={{ forgejo_gid }}
+      - FORGEJO__database__DB_TYPE={{ forgejo_db_type }}
+      - FORGEJO__database__HOST=host.docker.internal:{{ forgejo_db_port }}
+      - FORGEJO__database__NAME={{ forgejo_db_name }}
+      - FORGEJO__database__USER={{ forgejo_db_user }}
+      - FORGEJO__database__PASSWD={{ forgejo_db_password }}
+{% if forgejo_use_redis %}
+      - FORGEJO__cache__ENABLED=true
+      - FORGEJO__cache__ADAPTER=redis
+      - FORGEJO__cache__HOST=redis://redis:{{ redis_port }}/0
+      - FORGEJO__session__PROVIDER=redis
+      - FORGEJO__session__PROVIDER_CONFIG=redis://redis:{{ redis_port }}/0
+{% endif %}
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    volumes:
+      - {{ forgejo_data_path }}/git:/data/git
+      - {{ forgejo_data_path }}/attachments:/data/attachments
+      - {{ forgejo_data_path }}/lfs:/data/lfs
+      - {{ forgejo_config_path }}/app.ini:/data/gitea/conf/app.ini
+      - {{ forgejo_custom_path }}:/data/gitea/custom
+      - /etc/timezone:/etc/timezone:ro
+      - /etc/localtime:/etc/localtime:ro
+    ports:
+      - "127.0.0.1:{{ forgejo_http_port }}:3000"
+      - "{{ forgejo_ssh_port }}:22"
+    networks:
+      - forgejo
+{% if forgejo_use_redis %}
+    depends_on:
+      - redis
+{% endif %}
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "10m"
+        max-file: "3"
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:3000/api/healthz"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+
+{% if forgejo_use_redis %}
+  redis:
+    image: redis:7-alpine
+    container_name: forgejo-redis
+    restart: unless-stopped
+    volumes:
+      - {{ forgejo_data_path }}/redis:/data
+    networks:
+      - forgejo
+    command: redis-server --appendonly yes
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "5m"
+        max-file: "3"
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 30s
+      timeout: 3s
+      retries: 3
+{% endif %}
+
+networks:
+  forgejo:
+    driver: bridge