Use immutable tags for running tasks

This way we can run tasks with `IfNotPresent` and be sure it works as intended.

Dockerfile

@@ -1,3 +1,5 @@
+ARG IMAGE_TAG
+ARG IMAGE_REPOSITORY
 FROM python:3
 
 WORKDIR /app/
@@ -11,3 +13,9 @@ ADD ./ ./
 ENTRYPOINT ["/usr/bin/env", "python3", "/app/rawfile.py"]
 CMD ["csi-driver"]
 ENV PYTHONUNBUFFERED 1
+
+
+ARG IMAGE_TAG
+ARG IMAGE_REPOSITORY
+ENV IMAGE_REPOSITORY ${IMAGE_REPOSITORY}
+ENV IMAGE_TAG ${IMAGE_TAG}