Revert "add workflow"

This reverts commit 4b1ffd387a.

.gitea/workflows/default.yaml

@@ -12,11 +12,13 @@ env:
 jobs:
   build:
     runs-on: ubuntu-latest
-    container:
-      image: rust:latest
+
     steps:
     - uses: actions/checkout@v3
 
+    - name: Install Rust toolchain
+      uses: dtolnay/rust-toolchain@stable
+
     - name: Cache dependencies
       uses: actions/cache@v3
       with: