[Bug]: local-environment example for keycloak does not run about oauth2-proxy

[sedghi]

For Kubuntu 22.0.4 it works for some reason, so it might be Mac?

[2024/06/07 14:26:12] [provider.go:55] Performing OIDC Discovery...
[2024/06/07 14:26:12] [providers.go:146] Warning: Your provider supports PKCE methods ["S256" "plain"], but you have not enabled one with --code-challenge-method
[2024/06/07 14:26:12] [oauthproxy.go:171] OAuthProxy configured for OpenID Connect Client ID: oauth2-proxy
[2024/06/07 14:26:12] [oauthproxy.go:177] Cookie settings: name:_oauth2_proxy secure(https):false httponly:true expiry:168h0m0s domains:.oauth2-proxy.localhost path:/ samesite: refresh:disabled
[2024/06/07 14:34:40] [oauthproxy.go:1017] No valid authentication in request. Initiating login.
172.23.0.1 - 3be9f4a9-5216-465b-ab51-84c201ca019f - - [2024/06/07 14:34:40] localhost GET - "/" HTTP/1.0 "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36" 403 8566 0.000
172.23.0.1 - 89ab6d1e-4e81-4bd3-9349-95af43290aff - - [2024/06/07 14:34:40] localhost GET - "/oauth2/static/css/bulma.min.css" HTTP/1.0 "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36" 200 207302 0.001
[2024/06/07 14:34:40] [oauthproxy.go:1017] No valid authentication in request. Initiating login.
172.23.0.1 - 5e07121d-fc54-48d3-88b6-b1bd4c9c6736 - - [2024/06/07 14:34:40] localhost GET - "/favicon.ico" HTTP/1.0 "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36" 403 8577 0.000
172.23.0.1 - 2190b8a3-0bea-4ded-a430-7c77ddf3f079 - - [2024/06/07 14:34:43] localhost GET - "/oauth2/start?rd=%2F" HTTP/1.0 "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36" 302 309 0.000
[2024/06/07 14:34:43] [cookies.go:21] Warning: request host "localhost" did not match any of the specific cookie domains of ".oauth2-proxy.localhost"
[2024/06/07 14:34:43] [cookies.go:87] Warning: request host is "localhost" but using configured cookie domain of ".oauth2-proxy.localhost"