Cron job to check for and update images (#249)

Co-authored-by: Marco Franssen <[email protected]>

.github/scripts/edit-yaml.py

@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+from dict_deep import deep_set
+import ruamel.yaml
+
+def represent_none(self, data):
+    return self.represent_scalar(u'tag:yaml.org,2002:null', u'null')
+
+y = ruamel.yaml.YAML()
+y.indent(mapping=2, sequence=4, offset=2)
+# Dont wrap long lines
+y.width = 4096
+y.preserve_quotes = True
+y.representer.add_representer(type(None), represent_none)
+
+d = y.load(open(os.environ['VALUES']))
+
+tagquery = os.environ['QUERY'] + '.tag'
+
+deep_set(d, tagquery, os.environ['LATEST_VERSION']);
+
+y.dump(d, sys.stdout)