Add action

.gitea/workflows/image.yaml

@@ -0,0 +1,15 @@
+name: Build nspawn container
+run-name: Running on ${{ gitea.actor }}
+on:
+  push:
+    paths:
+      - Containerfile
+
+jobs:
+  container:
+    runs-on: nix
+    steps:
+      - name: Build
+        run: podman build . -t git.balsys.eu.org/tomas/dosemu
+      - name: Push
+        run: podman push git.balsys.eu.org/tomas/dosemu