feat: Add Gitea

gitea/.env.example

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+GITEA_HOST=git.example.org

gitea/.gitignore

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+.env

gitea/README.md

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+# About Gitea
+
+# How to setup
+
+```bash
+cp .env.example .env
+docker compose up -d
+```

gitea/docker-compose.yml

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+networks:
+  web:
+    external: true
+  gitea:
+    driver: bridge
+
+volumes:
+  gitea-data:
+    driver: local
+
+services:
+  gitea:
+    restart: always
+    image: "gitea/gitea:1.22.3"
+    environment:
+      - USER_UID=1000
+      - USER_GID=1000
+      - GITEA__database__DB_TYPE=mysql
+      - GITEA__database__HOST=db:3306
+      - GITEA__database__NAME=gitea
+      - GITEA__database__USER=gitea
+      - GITEA__database__PASSWD=gitea
+    volumes:
+      - /etc/timezone:/etc/timezone:ro
+      - /etc/localtime:/etc/localtime:ro
+      - gitea-data:/data
+    labels:
+      - "traefik.enable=true"
+
+      - "traefik.http.services.gitea-service.loadbalancer.server.port=3000"
+
+      - "traefik.http.routers.gitea-http.entrypoints=web"
+      - "traefik.http.routers.gitea-http.middlewares=https-redirect@docker"
+      - "traefik.http.routers.gitea-http.rule=Host(`${GITEA_HOST}`)"
+
+      - "traefik.http.routers.gitea-https.entrypoints=websecure"
+      - "traefik.http.routers.gitea-https.tls=true"
+      - "traefik.http.routers.gitea-https.tls.certresolver=letsencrypt"
+      - "traefik.http.routers.gitea-https.rule=Host(`${GITEA_HOST}`)"
+    networks:
+     - gitea
+     - web
+    depends_on:
+      - db
+
+  db:
+    image: mysql:8
+    restart: always
+    environment:
+      - MYSQL_ROOT_PASSWORD=gitea
+      - MYSQL_USER=gitea
+      - MYSQL_PASSWORD=gitea
+      - MYSQL_DATABASE=gitea
+    networks:
+      - gitea
+    volumes:
+      - ./mysql:/var/lib/mysql