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.gitlab-ci.yml

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+# .gitlab-ci.yml
+
+stages:
+  - dockerize
+  - deployment
+
+build-push-docker-image-job:
+  stage: dockerize
+  # Specify a Docker image to run the job in.
+  image: docker:20-dind
+  # Specify an additional image 'docker:dind' ("Docker-in-Docker") that
+  # will start up the Docker daemon when it is brought up by a runner.
+  before_script:
+    - docker login -u "$DOCKER_REGISTRY_USER" -p "$DOCKER_REGISTRY_PASSWORD" $DOCKER_REGISTRY_URL # Instructs GitLab to login to its registry
+  services:
+    - name: docker:20-dind
+      alias: docker
+      command: ["--tls=false"]
+  script:
+    - echo "Building..." # MAKE SURE NO SPACE ON EITHER SIDE OF = IN THE FOLLOWING LINE
+    - export CONTAINER_FULL_IMAGE_NAME_WITH_TAG=$IMAGE_NAME_WITH_REGISTRY_PREFIX/my-build-image:$COMMIT_HASH
+    - docker build -f ./Dockerfile --pull -t built-image-name .
+    - docker tag built-image-name "$CONTAINER_FULL_IMAGE_NAME_WITH_TAG"
+    - docker push "$CONTAINER_FULL_IMAGE_NAME_WITH_TAG"
+    - echo "$CONTAINER_FULL_IMAGE_NAME_WITH_TAG"
+    - echo "Deploying on CapRover..."
+    - docker run caprover/cli-caprover:2.2.3 caprover deploy --caproverUrl "$CAPROVER_URL" --caproverPassword "$CAPROVER_PASSWORD" -a "$CAPROVER_APP" -i "$CONTAINER_FULL_IMAGE_NAME_WITH_TAG"
+  only:
+    - main
+  variables:
+    DOCKER_REGISTRY_USER: ${CI_REGISTRY_USER}
+    DOCKER_REGISTRY_PASSWORD: ${CI_REGISTRY_PASSWORD}
+    DOCKER_REGISTRY_URL: ${CI_REGISTRY}
+    IMAGE_NAME_WITH_REGISTRY_PREFIX: ${CI_REGISTRY_IMAGE}
+    COMMIT_HASH: ${CI_COMMIT_SHA}
+    CAPROVER_URL: ${CAPROVER_URL}
+    CAPROVER_PASSWORD: ${CAPROVER_PASSWORD}
+    CAPROVER_APP: ${CAPROVER_APP}