Remove ports: section (no more host port mapping). Add networks:
with static ipv4_address for gitea and db containers. Reference
external gitea_net network (macvlan created by phase scripts).
Add DB_CONTAINER_IP for database service networking.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add DB_SERVICE_START/END markers for the database container and
DB_DEPENDS_START/END for the gitea service depends_on. Phase scripts
strip these blocks for sqlite3 and populate DB-specific vars
(image, env, healthcheck, data dir) for mysql/postgres/mssql.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>