changed back to checkout@v4 and commited Dockerfile

.github/workflows/publish-image.yml

@@ -7,7 +7,7 @@ jobs:
   build_and_publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Login to GHCR.io
         run: echo "${{ secrets.GHCR_PAT }}" | docker login --username ${{ secrets.GHCR_USER }} --password-stdin ghcr.io
       - name: Build and tag image

Dockerfile

@@ -0,0 +1,9 @@
+# syntax=docker/dockerfile:1
+FROM python:3.12-alpine
+RUN mkdir -p /opt/netbox-zabbix
+COPY . /opt/netbox-zabbix
+WORKDIR /opt/netbox-zabbix
+RUN if ! [ -f ./config.py ]; then cp ./config.py.example ./config.py; fi
+RUN pip install -r ./requirements.txt
+ENTRYPOINT ["python"]
+CMD ["/opt/netbox-zabbix/netbox_zabbix_sync.py", "-v"]