diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 3ea09606..581751e6 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -193,6 +193,8 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/')
     runs-on: ubuntu-latest
     needs: [ release ]
+    env:
+      DOCKER_BUILD: true
     steps:
       - uses: actions/checkout@v3
       - uses: dtolnay/rust-toolchain@stable
diff --git a/lib/build.rs b/lib/build.rs
index 627317ea..aa473e45 100644
--- a/lib/build.rs
+++ b/lib/build.rs
@@ -1,9 +1,8 @@
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     // otherwise fails while building Docker image
-    #[cfg(not(target_env = "musl"))]
-    {
-        for proto in std::fs::read_dir("tests/grpc/protos").unwrap() {
-            proto.map(|p| p.path()).ok().map(tonic_build::compile_protos).transpose()?;
+    if std::env::var("DOCKER_BUILD").is_err() {
+        for proto in std::fs::read_dir("tests/grpc/protos")? {
+            tonic_build::compile_protos(proto?.path())?;
         }
     }
     Ok(())