Init Dashboard V2 (#316)

* Init Dashboard V2

* Update README.md

* use dedicated vars and prevent docker push on PRs

---------

Co-authored-by: Maycon Santos <mlsmaycon@gmail.com>

config.json

@@ -0,0 +1,16 @@
+{
+  "auth0Auth": "$USE_AUTH0",
+  "authAuthority": "$AUTH_AUTHORITY",
+  "authClientId": "$AUTH_CLIENT_ID",
+  "authClientSecret": "$AUTH_CLIENT_SECRET",
+  "authScopesSupported": "$AUTH_SUPPORTED_SCOPES",
+  "authAudience": "$AUTH_AUDIENCE",
+  "apiOrigin": "$NETBIRD_MGMT_API_ENDPOINT",
+  "grpcApiOrigin": "$NETBIRD_MGMT_GRPC_API_ENDPOINT",
+  "redirectURI": "$AUTH_REDIRECT_URI",
+  "silentRedirectURI": "$AUTH_SILENT_REDIRECT_URI",
+  "tokenSource": "$NETBIRD_TOKEN_SOURCE",
+  "dragQueryParams": "$NETBIRD_DRAG_QUERY_PARAMS",
+  "hotjarTrackID": "$NETBIRD_HOTJAR_TRACK_ID",
+  "googleAnalyticsID": "$NETBIRD_GOOGLE_ANALYTICS_ID"
+}