Build images in Gitea actions - pass 1

.github/workflows/build.yml

@@ -0,0 +1,25 @@
+name: Build images
+
+"on":
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    name: "Build"
+    runs-on: nix-latest
+    strategy:
+      matrix:
+        image:
+          - bitwarden
+          - builder
+          - immich
+          - sword-container-builder
+          - vm-test
+    steps:
+      - uses: actions/checkout@v5
+      - run: |
+          nix build ".#${{ matrix.image }}"
+          podman import result "src.thehellings.com/greg/${{ matrix.image }}"
+          podman images

img/builder.nix

@@ -1,5 +1,6 @@
 {
   bashInteractive,
+  buildah,
   dockerTools,
   git,
   lib,
@@ -44,6 +45,7 @@ in
     (lib.getExe activate)
   ];
   extraPkgs = [
+    buildah
     dockerTools.caCertificates
     nix-output-monitor
     podman