Fix format check in CI

Author: say-paul

.github/workflows/ci.yml

@@ -1,7 +1,7 @@
 on:
   push:
     branches:
-    - main
+    - greenboot-rs
   pull_request:
 
 name: Continuous integration
@@ -22,20 +22,18 @@ jobs:
           skip: "./docs/Gemfile.lock,./docs/_config.yml,./.github,./.git,./greenboot.spec,./dist"
 
   fmt:
-    name: Rustfmt
+    name: Cargo fmt
     runs-on: ubuntu-latest
+    container: fedora:latest
     steps:
+      - name: Install deps
+        run: |
+          dnf install -y cargo rustfmt
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-          override: true
-      - run: rustup component add rustfmt
       - uses: actions-rs/cargo@v1
         with:
           command: fmt
-          args: --all -- --check
+          args: --check --all
 
   clippy:
     name: Clippy
@@ -91,9 +89,7 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: test
-      # - name: Ensure building did not change any code
-      #   run: |
-      #     git diff --exit-code
+      
 
   # manpages:
   #   name: Test man page generation