Fail release workflow if not in tags

.gitea/scripts/check-tag

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+if [ "$(echo $GITHUB_REF| cut -d'/' -f2)" == "tags" ]; then
+    exit 1;
+fi

.gitea/workflows/release.yml

@@ -10,10 +10,11 @@ jobs:
     runs-on: rust-cross
     name: stable / cross-${{ matrix.target }}
     strategy:
-      fail-fast: false
+      fail-fast: true
       matrix:
         target: ["armv7-unknown-linux-gnueabihf", "aarch64-unknown-linux-gnu", "x86_64-unknown-linux-gnu"]
     steps:
+      - run: echo $PWD && ./.gitea/scripts/check-tag
       - uses: actions/checkout@v3
       - run: cargo fmt --check
       - uses: https://github.com/Swatinem/rust-cache@v2