STAC-0 Add docker build. [7]

Author: LouisParkin

.github/workflows/docker.yml

@@ -44,7 +44,7 @@ jobs:
           type=ref,event=pr
           type=semver,pattern={{version}}
           type=semver,pattern={{major}}.{{minor}}
-          type=sha,prefix={{branch}}-
+          type=sha
           type=raw,value=latest,enable={{is_default_branch}}
 
     - name: Set up Python