Provide very basic woodpecker integration

.woodpecker/deploy.yaml

@@ -0,0 +1,39 @@
+labels:
+  hostname: "nixos-x86-64"
+
+variables: &nix-config
+    NIXOS_VERSION: "unstable"
+    NIXPKGS_ALLOW_UNFREE: "1"
+    NIXPKGS_ALLOW_INSECURE: "1"
+
+steps:
+  - name: Configure Nix Channels
+    image: bash
+    commands:
+      - nix-channel --add https://nixos.org/channels/nixos-$${NIXOS_VERSION} nixos
+      - nix-channel --update
+    environment:
+      *nix-config
+    when:
+      - evaluate: 'CI_PIPELINE_EVENT != "cron" && CI_PIPELINE_EVENT != "schedule"'
+
+  - name: Check Flake
+    image: bash
+    commands:
+      - nix flake check
+    environment:
+      *nix-config
+    when:
+      - evaluate: 'CI_PIPELINE_EVENT != "cron" && CI_PIPELINE_EVENT != "schedule"'
+
+  - name: Deploy
+    image: bash
+    commands:
+      - eval "$(ssh-agent -s)"
+      - ssh-add - <<< $${SSH_PRIVATE_KEY}
+      - nix develop --command deploy
+    environment:
+      *nix-config
+    when:
+      - evaluate: 'CI_PIPELINE_EVENT != "cron" && CI_COMMIT_BRANCH == "master"'
+