Draft: Resolve "Extrahovat Gateway z projketu dna-analyser"

Closes #1

.gitlab-ci.yml

+
 variables:
   SPRING_PROFILES_ACTIVE: gitlab
+  DOCKER_HOST: $DOCKER_HOST_BIO
+  #IMAGE_TAG: $CI_COMMIT_TAG || "latest"
+  IMAGE_TAG: "latest"
+
+#services:
+#  - docker:dind
+
+cache:
+  untracked: true
+  key: "$CI_COMMIT_MESSAGE"
+  paths:
+    - .gradle
+    - build
 
 stages:
   - analyse
@@ -35,16 +49,24 @@ code_quality_json:
 # Stage: build
 # ===========================================================================
 
-build-bootJar:
+gradlew-bootJar:
   stage: build
   image: eclipse-temurin:17-jdk-alpine
   script:
     - ./gradlew bootJar
 
-build-image:
+docker-build:
+  variables:
+    DOCKER_HOST: $DOCKER_HOST_BIO
   stage: build
+  image: docker:git
   script:
+    - echo $IMAGE_TAG
     - docker build -t $DOCKER_NAMESPACE/gateway:latest .
+    - docker save -o build/image.tar $DOCKER_NAMESPACE/gateway:$IMAGE_TAG
+  artifacts:
+    paths:
+      - build/image.tar
 
 # ===========================================================================
 # Stage: test
@@ -74,15 +96,16 @@ verification-env:
 # Stage: publish
 # ===========================================================================
 
-publish:
+docker-push:
   stage: publish
+  image: docker
   only:
     - master
     - /^verze_\d+\.\d+\.\d+$/
   before_script:
-    - export $(xargs < .env)
     - docker login -u $DOCKER_USERNAME -p $DOCKER_PASSWORD
   script:
+    - docker load -i build/image.tar
     - docker push $DOCKER_NAMESPACE/gateway:$TAG
 
 # ===========================================================================