fix: UID for self-hosted runners (#21, #23)

use 1000 (runner id) and 1001 (docker group id) according to https://github.com/actions/actions-runner-controller/blob/master/runner/actions-runner.ubuntu-20.04.dockerfile#L12

Author: alexef

entrypoint.py

@@ -1,10 +1,10 @@
 from subprocess import call
 from sys import argv
-from os import getenv
+from os import getenv, getuid
 
 (_, generator, generator_tag, openapi_file, openapi_url, config_file, template_dir, *args) = argv
 
-cmd = f"docker run -u 1001 --rm --workdir /github/workspace -v {getenv('GITHUB_WORKSPACE')}:/github/workspace"
+cmd = f"docker run -u {getuid()}:1001 --rm --workdir /github/workspace -v {getenv('GITHUB_WORKSPACE')}:/github/workspace"
 cmd = f"{cmd} openapitools/openapi-generator-cli:{generator_tag} generate"
 cmd = f"{cmd} -g {generator} -o /github/workspace/{generator}-client"