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

Closes #1

.gitlab-ci.yml

 variables:
   SPRING_PROFILES_ACTIVE: gitlab
 
+cache:
+  untracked: true
+  key: "$CI_COMMIT_MESSAGE"
+  paths:
+    - .gradle
+    - build
+
 stages:
   - analyse
   - build
@@ -35,15 +42,17 @@ code_quality_json:
 # Stage: build
 # ===========================================================================
 
-build-bootJar:
+gradlew-bootJar:
   stage: build
+  image: eclipse-temurin:17-jdk-alpine
   script:
     - ./gradlew bootJar
 
-build-image:
+docker-build:
   stage: build
+  image: docker
   script:
-    - docker build -t $DOCKER_NAMESPACE/gateway:latest
+    - docker build -t $DOCKER_NAMESPACE/gateway:latest .
 
 # ===========================================================================
 # Stage: test
@@ -51,6 +60,7 @@ build-image:
 
 verification-unit:
   stage: verification
+  image: eclipse-temurin:17-jdk-alpine
   allow_failure: true
   script:
     - ./gradlew test
@@ -61,6 +71,7 @@ verification-unit:
 
 verification-env:
   stage: verification
+  image: eclipse-temurin:17-jdk-alpine
   allow_failure: true
   before_script:
     - export $(xargs < .env)