Add authentication to CI/CD

.drone.yml

@@ -1,7 +1,6 @@
 ---
 global-variables:
   release: &release ${DRONE_TAG}
-  docker-registry-repo: &docker-registry-repo registry.fyloz.dev:5443/colorrecipesexplorer/backend
   environment: &environment
     JAVA_VERSION: 11
     GRADLE_VERSION: 7.1
@@ -12,6 +11,8 @@ global-variables:
     CRE_RELEASE: *release
   gradle-image: &gradle-image gradle:7.1-jdk11
   alpine-image: &alpine-image alpine:latest
+  docker-registry: &docker-registry registry.fyloz.dev:5443
+  docker-registry-repo: &docker-registry-repo registry.fyloz.dev:5443/colorrecipesexplorer/backend
 
 kind: pipeline
 name: default
@@ -56,6 +57,7 @@ steps:
         - GRADLE_VERSION
         - JAVA_VERSION
         - CRE_VERSION
+      registry: *docker-registry
       repo: *docker-registry-repo
       username:
         from_secret: docker_username
@@ -77,6 +79,7 @@ steps:
         - JAVA_VERSION
       build_args:
         - CRE_VERSION=${DRONE_TAG}
+      registry: *docker-registry
       repo: *docker-registry-repo
       username:
         from_secret: docker_username