here is my docker-compose file for the nginx container

version: "3"
services:
  swag:
    image: lscr.io/linuxserver/swag:latest
    container_name: swag
    networks:
      - gitea_bridge
    cap_add:
      - NET_ADMIN
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Europe/Berlin
      - URL=retro-hax.net
      - SUBDOMAINS=gitea,
      - VALIDATION=http
      - CERTPROVIDER=letsencrypt
    volumes:
      - /opt/swag_data/config:/config
    ports:
      - 443:443
      - 80:80
    restart: unless-stopped

networks:
  gitea_bridge:
    name: gitea_gitea
    external: true

and here is my git container docker-compose file

version: "3"

services:
  server:
    image: codeberg.org/forgejo/forgejo:1.18.2-1
    container_name: gitea
    environment:
      - PUID=1001
      - PGID=1001
    restart: always
    networks:
    - gitea_gitea
    volumes:
      - /opt/gitea_data:/data
      - /etc/timezone:/etc/timezone:ro
      - /etc/localtime:/etc/localtime:ro
      - /Drives/2TBSSD/git/:data/git/
    ports:
      - "3000:3000"
      - "222:22"

networks:
  gitea_gitea:
  external: true

version: "3"

services:
  server:
    image: codeberg.org/forgejo/forgejo:1.18.2-1
    container_name: gitea
    environment:
      - PUID=1001
      - PGID=1001
    restart: always
    networks:
    - gitea_gitea
    volumes:
      - /opt/gitea_data:/data
      - /etc/timezone:/etc/timezone:ro
      - /etc/localtime:/etc/localtime:ro
      - /Drives/2TBSSD/git/:data/git/
    ports:
      - "3000:3000"
      - "222:22"

networks:
  gitea_gitea:
    external: true

ERROR: for gitea  Cannot create container for service server: invalid volume specification: '/Drives/2TBSSD/git:data/git:rw': invalid mount config for type "bind": invalid mount path: 'data/git' mount path must be absolute

ERROR: for server  Cannot create container for service server: invalid volume specification: '/Drives/2TBSSD/git:data/git:rw': invalid mount config for type "bind": invalid mount path: 'data/git' mount path must be absolute
ERROR: Encountered errors while bringing up the project.