chore: add gitea mirror docker compose setup

Compose stack for Gitea with Postgres and gitea-mirror, plus an
environment template listing the required configuration keys.

gitea-mirror-local/.env.example

@@ -0,0 +1,19 @@
+COMPOSE_PROJECT_NAME=
+TZ=
+
+POSTGRES_DB=
+POSTGRES_USER=
+POSTGRES_PASSWORD=
+
+USER_UID=
+USER_GID=
+GITEA_HTTP_PORT=
+GITEA_SSH_PORT=
+GITEA_ROOT_URL=
+GITEA_SSH_DOMAIN=
+
+GITEA_MIRROR_PORT=
+BETTER_AUTH_SECRET=
+BETTER_AUTH_URL=
+PUBLIC_BETTER_AUTH_URL=
+BETTER_AUTH_TRUSTED_ORIGINS=

gitea-mirror-local/.gitignore

@@ -0,0 +1,4 @@
+gitea/
+gitea-mirror/
+.env
+purge.py

gitea-mirror-local/compose.yml

@@ -0,0 +1,44 @@
+services:
+  db:
+    image: postgres:16-alpine
+    environment:
+      POSTGRES_DB: gitea
+      POSTGRES_USER: gitea
+      POSTGRES_PASSWORD: gitea
+    volumes:
+      - db-data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U gitea -d gitea"]
+      interval: 5s
+      timeout: 5s
+      retries: 10
+
+  gitea:
+    image: gitea/gitea:latest
+    depends_on:
+      db:
+        condition: service_healthy
+    environment:
+      GITEA__database__DB_TYPE: postgres
+      GITEA__database__HOST: db:5432
+      GITEA__database__NAME: gitea
+      GITEA__database__USER: gitea
+      GITEA__database__PASSWD: gitea
+      GITEA__server__SSH_PORT: 2222
+    volumes:
+      - gitea-data:/data
+    ports:
+      - "127.0.0.1:3000:3000"
+      - "127.0.0.1:2222:22"
+
+  gitea-mirror:
+    image: ghcr.io/raylabshq/gitea-mirror:latest
+    volumes:
+      - gitea-mirror-data:/app/data
+    ports:
+      - "127.0.0.1:4321:4321"
+
+volumes:
+  db-data:
+  gitea-data:
+  gitea-mirror-data: