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

Closes #1

.gitlab-ci.yml

-images: eclipse-temurin:17-jdk-alpine
 
 variables:
   SPRING_PROFILES_ACTIVE: gitlab
+  DOCKER_HOST: $DOCKER_HOST_BIO
+  IMAGE_TAG: $CI_COMMIT_TAG || "latest"
+
+#services:
+#  - docker:dind
+
+cache:
+  untracked: true
+  key: "$CI_COMMIT_MESSAGE"
+  paths:
+    - .gradle
+    - build
 
 stages:
   - analyse
@@ -37,15 +48,23 @@ 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:
-    - docker build -t $DOCKER_NAMESPACE/gateway:latest .
+    - docker build -t $DOCKER_NAMESPACE/gateway:$IMAGE_TAG .
+    - docker save -o build/image.tar $DOCKER_NAMESPACE/gateway:$IMAGE_TAG
+  artifacts:
+    paths:
+      - build/image.tar
 
 # ===========================================================================
 # Stage: test
@@ -53,6 +72,7 @@ build-image:
 
 verification-unit:
   stage: verification
+  image: eclipse-temurin:17-jdk-alpine
   allow_failure: true
   script:
     - ./gradlew test
@@ -63,6 +83,7 @@ verification-unit:
 
 verification-env:
   stage: verification
+  image: eclipse-temurin:17-jdk-alpine
   allow_failure: true
   before_script:
     - export $(xargs < .env)
@@ -73,15 +94,16 @@ 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
 
 # ===========================================================================