Update .gitlab-ci.yml file

.gitlab-ci.yml

-docker-build:
-  # Use the official docker image.
-  image: docker:stable
+default:
+  image: docker:26.0.1-dind
+
+stages:
+  - build
+
+variables:
+  PACKAGE_NAME: "alphafold"
+  DOCKER_IMAGE: "$CI_REGISTRY_IMAGE/$PACKAGE_NAME"
+  DOCKER_TLS_CERTDIR: "/certs"
+
+before_script:
+  - unset DOCKER_HOST
+  - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
+
+push_docker_image:
   stage: build
-  services:
-    - docker:26.0.1-dind
-  variables:
-    DOCKER_IMAGE_NAME: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
-    DOCKER_TLS_CERTDIR: "/certs"
-  before_script:
-    - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
-  cache:
-    key: ${CI_COMMIT_REF_SLUG}
-    paths:
-      - cache/
-  # All branches are tagged with $DOCKER_IMAGE_NAME (defaults to commit ref slug)
-  # Default branch is also tagged with `latest`
+  image: docker:26.0.1-dind
   script:
-    - docker build --cache-from ${CI_REGISTRY_IMAGE}:${CI_COMMIT_REF_SLUG} --pull -t "$DOCKER_IMAGE_NAME" .
-    - docker push "$DOCKER_IMAGE_NAME"
-    - |
-      if [[ "$CI_COMMIT_BRANCH" == "$CI_DEFAULT_BRANCH" ]]; then
-        docker tag "$DOCKER_IMAGE_NAME" "$CI_REGISTRY_IMAGE:latest"
-        docker push "$CI_REGISTRY_IMAGE:latest"
-      fi
-  # Run this job in a branch where a Dockerfile exists
-  rules:
-    - if: $CI_COMMIT_BRANCH
-      exists:
-        - Dockerfile
+    - docker build -t $DOCKER_IMAGE:$CI_COMMIT_SHORT_SHA -f docker/Dockerfile .
+    - docker push $DOCKER_IMAGE:$CI_COMMIT_SHORT_SHA
+  only:
+    - main  # Only run on the main branch
\ No newline at end of file