Switched to using kaniko

.gitlab-ci.yml

@@ -14,10 +14,11 @@ run_flask_app:
 
 build_docker_image:
   stage: build
-  image: docker:24
-  services:
-    - docker:24-dind
-  variables:
-    DOCKER_TLS_CERTDIR: "/certs"
+  image:
+    name: gcr.io/kaniko-project/executor:debug
+    entrypoint: [""]
   script:
-    - docker build -t flask-app .
+    - /kaniko/executor
+      --context "$CI_PROJECT_DIR"
+      --dockerfile "$CI_PROJECT_DIR/Dockerfile"
+      --no-push