feat: configurable timezone for docker in time server

[S1M0N38]

I'd like to set the timezone in the src/servers/time server when using a docker installation. Right the entry point of the docker file does not include the available args:

servers/src/time/Dockerfile

Line 36 in e055e18

ENTRYPOINT ["mcp-server-time"]

I'd like to be able to set --local-timezone using a env variable. That is

"mcpServers": {
  "time": {
    "command": "docker",
    "args": [
      "run",
      "-i",
      "--rm",
      "-e",
      "LOCAL_TIMEZONE",
      "mcp/time"
    ],
    "env": {
      "LOCAL_TIMEZONE": "America/New_York"
    }
  }
}