ci: push image

.gitea/workflows/docker.yaml

@@ -1,12 +1,34 @@
 name: Build a docker image.
+
 on: [push]
 
 jobs:
   build-docker-image:
     runs-on: nixos
+
     steps:
       - name: Check out repository code
         uses: actions/checkout@v4
 
       - name: Build flake
         run: nix build .#docker
+
+      - name: Load Docker image
+        run: docker load < result
+
+      - name: Login to local Gitea registry
+        run: |
+          echo "${{ secrets.GITEA_TOKEN }}" | \
+            docker login ${{ gitea.server_url }} \
+              --username "${{ gitea.actor }}" \
+              --password-stdin
+
+      - name: Tag image
+        run: |
+          docker tag my-image:latest \
+            ${{ gitea.server_url }}/${{ gitea.repository }}:latest
+
+      - name: Push image
+        run: |
+          docker push \
+            ${{ gitea.server_url }}/${{ gitea.repository }}:latest