renamed existing deploy workflows. added testing workflow

.github/workflows/docker_deploy.yml

@@ -0,0 +1,40 @@
+name: Deploy Docker Image to Github Container Registry
+
+on:
+    push:
+        branches: ["main"]
+        paths:
+            - "Cargo.toml"
+
+env:
+    CARGO_TERM_COLOR: always
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+        permissions:
+            packages: write
+            contents: read
+            attestations: write
+            id-token: write
+
+        steps:
+            - uses: actions/checkout@v4
+            - uses: hustcer/setup-nu@v3
+            - uses: cachix/install-nix-action@v31
+              with:
+                  nix_path: nixpkgs=channel:nixos-unstable
+
+            - run: nix build .#docker
+
+            - run: |
+                  export CARGO_VERSION=$(nu -c "cargo metadata --format-version=1 --no-deps | from json | get packages | first | get version")
+                    echo "CARGO_VERSION=$CARGO_VERSION" >> $GITHUB_ENV
+
+            - run: docker load -i result
+            - name: Log in to registry
+              run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
+            - run: docker tag docki:latest "ghcr.io/quirinecker/docki:$CARGO_VERSION"
+            - run: docker tag docki:latest "ghcr.io/quirinecker/docki:latest"
+            - run: docker push ghcr.io/quirinecker/docki:$CARGO_VERSION
+            - run: docker push ghcr.io/quirinecker/docki:latest