Add workflow to delete old docker images

.github/workflows/clean_dockerhub_images.yml

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+name: Docker Cleanup
+
+on:
+  schedule:
+    - cron: '0 12 * * 1'  # Runs every Monday at noon (UTC)
+  workflow_dispatch:
+
+jobs:
+  cleanup:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repository
+        uses: actions/checkout@v3
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.x"
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install requests
+
+      - name: Run Docker image cleanup
+        run: make clean-old-temporary-docker-images
+        env:
+          DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
+          DOCKERHUB_TOKEN: ${{ secrets.DOCKERHUB_TOKEN }}
+          DELETE_AFTER_DAYS: 30

Makefile

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+# Makefile to run the Docker cleanup script
+
+clean-old-temporary-docker-images:
+	@echo "Running Docker Hub image cleanup script..."
+	python ci/clean-old-temporary-docker-images.py

ci/clean-old-temporary-docker-images.py

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+import os
+import requests
+from datetime import datetime, timedelta
+
+DOCKERHUB_USERNAME = os.environ["DOCKERHUB_USERNAME"]
+DOCKERHUB_TOKEN = os.environ["DOCKERHUB_TOKEN"]
+DELETE_AFTER_DAYS = os.environ["DELETE_AFTER_DAYS"]
+
+def get_docker_token(username, password):
+    url = "https://hub.docker.com/v2/users/login/"
+    headers = {"Content-Type": "application/json"}
+    data = {"username": username, "password": password}
+
+    response = requests.post(url, json=data, headers=headers)
+    if response.status_code == 200:
+        return response.json()["token"]
+    else:
+        print(f"Failed to login to DockerHub: {response.status_code}")
+        return None
+
+def get_repo_tags(token):
+    url = f"https://hub.docker.com/v2/repositories/scylladb/gocql-extended-ci/tags/"
+    headers = {"Authorization": f"Bearer {token}"}
+    response = requests.get(url, headers=headers)
+    if response.status_code != 200:
+        print(f"Failed to get tags, Status Code: {response.status_code}, {response.text}")
+        return None
+    return response.json()["results"]
+
+def delete_tag(tag, token):
+    url = f"https://hub.docker.com/v2/repositories/scylladb/gocql-extended-ci/tags/{tag}/"
+    headers = {"Authorization": f"Bearer {token}"}
+    response = requests.delete(url, headers=headers)
+    if response.status_code > 200 and response.status_code < 300:
+        print(f"Deleted tag: {tag}")
+        return True
+    print(f"Failed to delete tag: {tag}, Status Code: {response.status_code}")
+    return False
+
+def clean_old_images():
+    token = get_docker_token(DOCKERHUB_USERNAME, DOCKERHUB_TOKEN)
+    if token is None:
+        return False
+    tags = get_repo_tags(token)
+    if tags is None:
+        return False
+    threshold_date = datetime.now() - timedelta(days=int(DELETE_AFTER_DAYS))
+    status = True
+    for tag in tags:
+        last_updated = datetime.strptime(tag["last_updated"], "%Y-%m-%dT%H:%M:%S.%fZ")
+        if last_updated < threshold_date:
+            status = status and delete_tag(tag["name"], token)
+    return status
+
+if __name__ == "__main__":
+    if not clean_old_images():
+        exit(1)
+    exit(0)