Add CI configuration (docker + gitlab)

.gitlab-ci.yml

Dockerfile

angular.json

docker-compose.yml

nginx.conf.template

package.json

.../components/organizations/list/organization.datasource.ts

src/app/services/organization.service.ts

src/assets/swagger/organizations.json

src/assets/swagger/resources.json

src/environments/environment.prod.ts

src/environments/environment.ts