Reapply "switch to forgejo actions"

This reverts commit 0d3593aeb8.

.drone.yml

@@ -1,49 +0,0 @@
----
-kind: secret
-name: registry
-get:
-  path: docker-push
-  name: registry
----
-kind: secret
-name: username
-get:
-  path: docker-push
-  name: username
----
-kind: secret
-name: password
-get:
-  path: docker-push
-  name: password
----
-kind: pipeline
-type: kubernetes
-name: build
-steps:
-- name: nixos
-  image: docker.io/jcollie/nixos-runner:latest
-  pull: always
-  commands:
-  - set
-  - nix build -L .#webserver
-  - push-container result --repository jeff/healthchecks-webserver
-  - nix build -L .#smtpd
-  - push-container result --repository jeff/healthchecks-smtpd
-  - nix build -L .#sendalerts
-  - push-container result --repository jeff/healthchecks-sendalerts
-  - nix build -L .#sendreports
-  - push-container result --repository jeff/healthchecks-sendreports
-  - nix build -L .#maintenance
-  - push-container result --repository jeff/healthchecks-maintenance
-  - nix build -L .#migrate
-  - push-container result --repository jeff/healthchecks-migrate
-  - nix build -L .#static
-  - push-container result --repository jeff/healthchecks-static
-  settings:
-    registry:
-      from_secret: registry
-    username:
-      from_secret: username
-    password:
-      from_secret: password

.forgejo/workflows/build.yaml

@@ -0,0 +1,46 @@
+name: build nixos-runner
+on:
+  - push
+jobs:
+  build:
+    runs-on: nixos
+    steps:
+      - uses: actions/checkout@v4
+      - run: nix build -L .#webserver
+      - run: mv result result-webserver
+      - run: nix build -L .#migrate
+      - run: mv result result-migrate
+      - run: nix build -L .#maintenance
+      - run: mv result result-maintenance
+      - run: nix build -L .#smtpd
+      - run: mv result result-smtpd
+      - run: nix build -L .#sendalerts
+      - run: mv result result-sendalerts
+      - run: nix build -L .#sendreports
+      - run: mv result result-sendreports
+      - run: nix build -L .#static
+      - run: mv result result-static
+      - run: |-
+          push-container result-webserver --repository ${{ secrets.FORGEJO_USERNAME }}/healthchecks-webserver
+          push-container result-migrate --repository ${{ secrets.FORGEJO_USERNAME }}/healthchecks-migrate
+          push-container result-maintenance --repository ${{ secrets.FORGEJO_USERNAME }}/helthchecks-maintenance
+          push-container result-smtpd --repository ${{ secrets.FORGEJO_USERNAME }}/healthchecks-smtpd
+          push-container result-sendalerts --repository ${{ secrets.FORGEJO_USERNAME }}/healthchecks-sendalerts
+          push-container result-sendreports --repository ${{ secrets.FORGEJO_USERNAME }}/healthchecks-sendreports
+          push-container result-static --repository ${{ secrets.FORGEJO_USERNAME }}/healthchecks-static
+        env:
+          REGISTRY: ${{ secrets.FORGEJO_REGISTRY }}
+          USERNAME: ${{ secrets.FORGEJO_USERNAME }}
+          PASSWORD: ${{ secrets.FORGEJO_PASSWORD }}
+      - run: |-
+          push-container result-webserver --repository ${{ secrets.DOCKER_USERNAME }}/healthchecks-webserver
+          push-container result-migrate --repository ${{ secrets.DOCKER_USERNAME }}/healthchecks-migrate
+          push-container result-maintenance --repository ${{ secrets.DOCKER_USERNAME }}/helthchecks-maintenance
+          push-container result-smtpd --repository ${{ secrets.DOCKER_USERNAME }}/healthchecks-smtpd
+          push-container result-sendalerts --repository ${{ secrets.DOCKER_USERNAME }}/healthchecks-sendalerts
+          push-container result-sendreports --repository ${{ secrets.DOCKER_USERNAME }}/healthchecks-sendreports
+          push-container result-static --repository ${{ secrets.DOCKER_USERNAME }}/healthchecks-static
+        env:
+          REGISTRY: ${{ secrets.DOCKER_REGISTRY }}
+          USERNAME: ${{ secrets.DOCKER_USERNAME }}
+          PASSWORD: ${{ secrets.DOCKER_PASSWORD }}