improved cicd in prep for auto rollout

.forgejo/workflows/push.yaml

@@ -1,10 +1,23 @@
 on: [push]
 jobs:
-  test:
+  check:
     runs-on: nix
     steps:
       - uses: https://code.forgejo.org/actions/checkout@v3
-      # - uses: DeterminateSystems/nix-installer-action@main
-      # - uses: DeterminateSystems/magic-nix-cache-action@main
       - run: nix flake check .
-      # - run: echo hi
+      - run: nix develop
+
+  deploy:
+    runs-on: nix
+    needs: check
+    if: contains(github.event.head_commit.message, 'deploy:')
+    steps:
+      - uses: https://code.forgejo.org/actions/checkout@v3
+      - name: Setup SSH key
+        run: |
+          mkdir -p ~/.ssh
+          echo "$SSHKEY" > ~/.ssh/id_rsa
+          chmod 600 ~/.ssh/id_rsa
+        env:
+          SSHKEY: ${{ secrets.SSHKEY }}
+      - run: deploy