OIDC Proxying Docker container using oauth2-proxy.

oauth2-proxy-gitlab-docker-compose.yml

services:
  prometheus-proxy:
    image: quay.io/oauth2-proxy/oauth2-proxy:v7.5.0
    command:
      - --http-address=:4180
      - --upstream=http://prometheus:9090
      - --email-domain=*
      - --oidc-issuer-url=https://gitlab.com
      - --provider=gitlab
      - --redirect-url=http://prometheus-oauth.localhost/oauth2/callback
    # Env file contents:
    # OAUTH2_PROXY_CLIENT_ID=...
    # OAUTH2_PROXY_CLIENT_SECRET=...
    # OAUTH2_PROXY_COOKIE_SECRET=...
    env_file: prometheus-proxy.env
    expose:
      - 4180
    restart: always
    labels:
      - traefik.enable=true
      - traefik.http.routers.prometheus-oauth.rule=Host(`prometheus-oauth.localhost`)