diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..ee080be
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,80 @@
+name: Release crate
+
+on:
+  release:
+    types: [published]
+
+
+env:
+  GITEA_BASE_URL: http://gitea:3000
+  REGISTRY_OWNER: ${{ github.repository_owner }}
+
+
+jobs:
+  release:
+    name: Publish to crates.io and create GitHub Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Cache cargo registry and git index
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+
+      - name: Build and test
+        run: cargo test --workspace --verbose
+
+      - name: Install cargo-edit and set crate version
+        id: set_version
+        run: |
+          cargo install cargo-edit --locked --force
+          TAG="${{ github.event.release.tag_name }}"
+          VERSION="${TAG#v}"
+          cargo set-version "$VERSION" --workspace
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+
+      - name: Configure Cargo registries (crates.io default + add Gitea)
+        shell: bash
+        env:
+          TOKEN: ${{ secrets.CARGO_GITEA_TOKEN }}
+        run: |
+          mkdir -p ~/.cargo
+          # crates.io stays default
+          cat > ~/.cargo/config.toml <<'EOF'
+          [registry]
+          default = "crates-io"
+          EOF
+
+          # Add Gitea as extra registry (sparse index recommended)
+          {
+            echo "[registries.gitea]"
+            echo "index = \"sparse+${GITEA_BASE_URL}/api/packages/${REGISTRY_OWNER}/cargo/\""
+          } >> ~/.cargo/config.toml
+
+          # Auth for Gitea registry
+          umask 077
+          cat > ~/.cargo/credentials.toml <<EOF
+          [registries.gitea]
+          token = "Bearer ${TOKEN}"
+          EOF
+
+      - name: Publish to Gitea registry
+        run: cargo publish --registry gitea
+
+#      - name: Publish to crates.io
+#        env:
+#          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
+#        run: |
+#          if [ -z "$CARGO_REGISTRY_TOKEN" ]; then
+#            echo "CARGO_REGISTRY_TOKEN is not set. Set it in repository secrets to publish to crates.io"
+#            exit 1
+#          fi
+#          cargo publish --token "$CARGO_REGISTRY_TOKEN" --allow-dirty
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index aa47946..3e1308a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 target
 Cargo.lock
-shell.nix
 dist
-generated_cards
\ No newline at end of file
+generated_cards
+main.rs
\ No newline at end of file
diff --git a/Cargo.toml b/Cargo.toml
index a96f12c..1ae2ec7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "schafkopf-logic"
-version = "0.1.0"
+version = "0.0.0"
 edition = "2024"
 description = "Logic and rules for the Schafkopf card game: deck, suits, ranks and game modes."
 license = "MIT"
diff --git a/README.md b/README.md
index fa2a345..36e95ad 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Logic and rules for the German card game Schafkopf. This crate provides types
 and helpers for deck construction, common game modes and basic trick-taking
 logic.
 
-**Crate:** `schafkopf-logic` • **Version:** 0.1.0
+**Crate:** [`schafkopf-logic`](https://crates.io/crates/schafkopf-logic)
 
 ## Features
 
@@ -36,13 +36,13 @@ fn main() {
     deck.shuffle();
     let hands = deck.deal_4x8().expect("deck should contain 32 cards");
 
-    // form a sample trick from the first card of each hand
+    // Form a sample trick from the first card of each hand and print it
     let trick = [&hands[0][0], &hands[1][0], &hands[2][0], &hands[3][0]];
-    let winner = Gamemode::Sauspiel(Suit::Herz).winning_card(trick);
-    println!("Winning card: {}", winner);
+    println!("Trick: {}, {}, {}, {}", trick[0], trick[1], trick[2], trick[3]);
 
-    // rank points example
-    assert_eq!(Rank::Ass.points(), 11);
+    // Determine the winner for a sample game mode (Sauspiel with Schell)
+    let winner = Gamemode::Sauspiel(Suit::Schell).winning_card(trick);
+    println!("Winning card: {}", winner);
 }
 ```
 
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..a2f8153
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,18 @@
+let
+  pkgs = import <nixpkgs> {};
+in
+pkgs.mkShell {
+  buildInputs = with pkgs; [
+    cargo
+    rustc
+    rustPackages.clippy
+    pkg-config
+    gnupg
+    pinentry
+    pinentry-curses
+  ];
+  shellHook = ''
+    # Export GPG_TTY so pinentry-curses can attach to the current terminal
+    export GPG_TTY=$(tty)
+  '';
+}