Initial homelab docs

Co-authored-by: Cursor <cursoragent@cursor.com>

homelab/gitea/docker-compose-103.yml

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+# Gitea + PostgreSQL + act_runner (Gitea Actions)
+# Контейнер 103, IP 192.168.1.103
+# Запуск: в /opt/gitea на CT 103
+
+services:
+  db:
+    image: docker.io/library/postgres:16-alpine
+    restart: unless-stopped
+    environment:
+      POSTGRES_USER: gitea
+      POSTGRES_PASSWORD: gitea
+      POSTGRES_DB: gitea
+    volumes:
+      - gitea-postgres:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U gitea"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  server:
+    image: docker.gitea.com/gitea:1.25
+    container_name: gitea
+    restart: unless-stopped
+    depends_on:
+      db:
+        condition: service_healthy
+    environment:
+      USER_UID: 1000
+      USER_GID: 1000
+      GITEA__database__DB_TYPE: postgres
+      GITEA__database__HOST: db:5432
+      GITEA__database__NAME: gitea
+      GITEA__database__USER: gitea
+      GITEA__database__PASSWD: gitea
+      GITEA__server__DOMAIN: 192.168.1.103
+      GITEA__server__ROOT_URL: http://192.168.1.103:3000/
+      GITEA__server__SSH_PORT: 2222
+    volumes:
+      - gitea-data:/data
+      - /etc/timezone:/etc/timezone:ro
+      - /etc/localtime:/etc/localtime:ro
+    ports:
+      - "3000:3000"
+      - "2222:22"
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:3000/"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+      start_period: 30s
+
+  runner:
+    image: docker.io/gitea/act_runner:latest
+    restart: unless-stopped
+    depends_on:
+      server:
+        condition: service_healthy
+    volumes:
+      - runner-data:/data
+      - /var/run/docker.sock:/var/run/docker.sock
+    environment:
+      GITEA_INSTANCE_URL: http://server:3000
+      GITEA_RUNNER_REGISTRATION_TOKEN: ${GITEA_RUNNER_REGISTRATION_TOKEN:-}
+      GITEA_RUNNER_NAME: gitea-103-runner
+      GITEA_RUNNER_LABELS: docker:docker://alpine:latest
+
+volumes:
+  gitea-data:
+  gitea-postgres:
+  runner-data: