Disable the 'host' header check

`ng serve` is running behind a reverse proxy in the docker images, so that check is somewhat pointless. For actual
production environments `ng serve` must not be used at all.

See also angular/angular-cli#6349

Author: ankon

Docker/alpine/skf-angular.sh

@@ -2,4 +2,4 @@
 
 # Start the SKF Angular app
 cd /skf-flask/Angular
-npm start
+npm start -- --disable-host-check