Push forgejo-nix-action and atticd to container registry

.forgejo/workflows/cache.yaml

@@ -25,7 +25,19 @@ jobs:
         run: nix build --out-link atticd ./checkout#packages.x86_64-linux.atticd
       - name: Push atticd to Nix cache
         run: /bin/attic push home atticd
+      - name: Log into container registry
+        run: /bin/skopeo login --tls-verify --username pim --password ${{ secrets.RUNNER_TOKEN }} https://git.kun.is
+      - name: Push Pim's blog to container registry
+        run: /bin/skopeo --insecure-policy copy docker-archive:./atticd docker://git.kun.is/home/atticd:latest
+      - name: Logout of container registry
+        run: /bin/skopeo logout https://git.kun.is
       - name: Build forgejo-nix-action
         run: nix build --out-link forgejo-nix-action ./checkout#packages.x86_64-linux.forgejo-nix-action
       - name: Push forgjeo-nix-action to Nix cache
         run: /bin/attic push home forgejo-nix-action
+      - name: Log into container registry
+        run: /bin/skopeo login --tls-verify --username pim --password ${{ secrets.RUNNER_TOKEN }} https://git.kun.is
+      - name: Push Pim's blog to container registry
+        run: /bin/skopeo --insecure-policy copy docker-archive:./forgejo-nix-action docker://git.kun.is/home/forgejo-nix-action:latest
+      - name: Logout of container registry
+        run: /bin/skopeo logout https://git.kun.is