Add CI check

Author: sbernauer

.github/workflows/build.yml

@@ -102,6 +102,27 @@ jobs:
       - run: cargo test --no-default-features --workspace
       - run: cargo test --all-features --workspace
 
+  check_crd_previews:
+    name: Check if CRD previews are up to date
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          persist-credentials: false
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ env.RUST_TOOLCHAIN_VERSION }}
+      - name: Regenerate CRD previews
+        run: cargo check -p stackable-crd-previewer
+      - name: Check if committed CRD previews were up to date
+        run: git diff --exit-code generated-crd-previews
+      - name: Git Diff showed uncommitted changes
+        if: ${{ failure() }}
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
+        with:
+          script: |
+            core.setFailed('Committed CRD previews were not up to date, please run "cargo check -p stackable-crd-previewer" and re-commit!')
+
   tests_passed:
     name: All tests passed
     needs:

crates/stackable-crd-previewer/build.rs

@@ -37,7 +37,7 @@ pub enum Error {
 }
 
 pub fn main() -> Report<Error> {
-    Report::capture(|| write_crds())
+    Report::capture(write_crds)
 }
 
 macro_rules! write_crd {