Remove v prefix from generated version numbers to stop things breaking and keep with Docker conventions

.gitlab-ci.yml

@@ -16,5 +16,5 @@ buildAndPush:
     - "echo $CI_REGISTRY_PASSWORD | docker login $CI_REGISTRY --username $CI_REGISTRY_USER --password-stdin"
     - "docker info"
   script:
-    - "docker build . --file Dockerfile --tag ${CI_REGISTRY_IMAGE}:latest --tag ${CI_REGISTRY_IMAGE}:${CI_COMMIT_TAG}"
+    - "docker build . --file Dockerfile --tag ${CI_REGISTRY_IMAGE}:latest --tag ${CI_REGISTRY_IMAGE}:${CI_COMMIT_TAG#'v'}" # that weird thing #'v' thing strips a prefix of v
     - "docker push --all-tags $CI_REGISTRY_IMAGE"

generate.py

@@ -2,6 +2,7 @@
 import sys
 
 VERSION = sys.argv[1]
+VERSION = VERSION[1:] if VERSION.lower().startswith("v") else VERSION
 
 def do_substitution(input_filename: str, output_filename: str):
     with open(input_filename) as f: