Remove github.sha tag

Author: Nifury

.github/workflows/docker.yml

@@ -36,6 +36,4 @@ jobs:
         with:
           context: packages/opencode
           push: true
-          tags: |
-            ghcr.io/${{ env.OWNER }}/opencode:latest
-            ghcr.io/${{ env.OWNER }}/opencode:${{ github.sha }}
+          tags: ghcr.io/${{ env.OWNER }}/opencode:latest