DATABASE_URI not picked up

[fean]

{
  "mcpServers": {
    "postgres": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "DATABASE_URI",
        "crystaldba/postgres-mcp",
        "--access-mode=unrestricted"
      ],
      "env": {
        "DATABASE_URI": "postgresql://username:password@[server]:[port]/dbname"
      }
    }
  }
}

After adding this to the .claude.json, it boots the container but can't actually use the DB:

Container logs:

postgres-mcp --access-mode=unrestricted

----------------

[12/15/25 13:08:53] INFO     Starting PostgreSQL MCP Server in     server.py:555

                             UNRESTRICTED mode                                  

                    WARNING  error connecting in 'pool-1':     pool_async.py:691

                             connection is bad: connection to                   

                             server on socket                                   

                             "/var/run/postgresql/.s.PGSQL.543                  

                             2" failed: No such file or                         

                             directory                                          

                                     Is the server running                      

                             locally and accepting connections                  

                             on that socket?               

The server doesn't actually run on that port. I also saw that the repo is pretty much dead after the temporal take over, anyone have any ideas on what's up?