diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 64cf30f8413..05e9b5be3c4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -219,19 +219,30 @@ jobs:
     - name: test
       run: python check.py --binaryen-bin=out/bin
 
-  # Build with gcc 6.3 and run tests on Alpine Linux (inside chroot).
+  # Run tests on Alpine Linux, which we use to make our release builds.
   # Note: Alpine uses musl libc.
-  # Keep in sync with build_release.yml
+  # Keep in sync with build_release.yml. The only difference is that here we
+  # do not have the "archive" and "upload tarball" jobs.
   build-alpine:
     name: alpine
-    runs-on: ubuntu-24.04-arm
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, ubuntu-24.04-arm]
     steps:
+    - uses: actions/setup-python@v5
+      with:
+        python-version: '3.x'
     - uses: actions/checkout@v4
       with:
         submodules: true
+
     - name: start docker
       run: |
-        docker run -w /src -dit --platform=linux/arm64 --name alpine -v $PWD:/src node:lts-alpine
+        if [[ "${{ matrix.docker_platform }}" == "ubuntu-24.04-arm" ]]; then
+          platform="--platform=linux/arm64"
+        fi
+        docker run -w /src -dit $platform --name alpine -v $PWD:/src node:lts-alpine
         echo 'docker exec alpine "$@";' > ./alpine.sh
         chmod +x ./alpine.sh
 
@@ -249,7 +260,7 @@ jobs:
 
     - name: cmake
       run: |
-        ./alpine.sh cmake . -G Ninja -DCMAKE_INSTALL_PREFIX=out/install -DCMAKE_CXX_FLAGS="-static" -DCMAKE_C_FLAGS="-static" -DCMAKE_BUILD_TYPE=Release -DBUILD_STATIC_LIB=ON -DBUILD_MIMALLOC=ON -DCMAKE_INSTALL_PREFIX=install
+        ./alpine.sh cmake . -G Ninja -DCMAKE_CXX_FLAGS="-static" -DCMAKE_C_FLAGS="-static" -DCMAKE_BUILD_TYPE=Release -DBUILD_STATIC_LIB=ON -DBUILD_MIMALLOC=ON -DCMAKE_INSTALL_PREFIX=install
 
     - name: build
       run: |
diff --git a/scripts/test/shared.py b/scripts/test/shared.py
index 3d36fb35fa1..72b64c762ad 100644
--- a/scripts/test/shared.py
+++ b/scripts/test/shared.py
@@ -443,6 +443,15 @@ def get_tests(test_dir, extensions=[], recursive=False):
     'token.wast',                 # Lexer should require spaces between strings and non-paren tokens
 ]
 
+if get_platform() == 'linux':
+    SPEC_TESTSUITE_TESTS_TO_SKIP += [
+        # Errors on Linux x86_64 with musl, https://github.com/WebAssembly/binaryen/pull/8557
+        'f32.wast',
+        'f64.wast',
+        'simd_f32x4_rounding.wast',
+        'simd_f64x2_rounding.wast',
+    ]
+
 
 def _can_run_spec_test(test):
     test = Path(test)
diff --git a/scripts/test/wasm2js.py b/scripts/test/wasm2js.py
index f75b2ba3269..4af2c55d837 100644
--- a/scripts/test/wasm2js.py
+++ b/scripts/test/wasm2js.py
@@ -42,10 +42,15 @@ def check_for_stale_files():
     all_tests = basic_tests + spec_tests + wasm2js_tests
     all_tests = [os.path.basename(os.path.splitext(t)[0]) for t in all_tests]
 
+    assert_test_prefixes = [t.split('.')[0] for t in assert_tests]
+    skipped_test_prefixes = [t.split('.')[0] for t in shared.SPEC_TESTSUITE_TESTS_TO_SKIP]
+
     all_files = os.listdir(shared.get_test_dir('wasm2js'))
     for f in all_files:
         prefix = f.split('.')[0]
-        if prefix in [t.split('.')[0] for t in assert_tests]:
+        if prefix in assert_test_prefixes:
+            continue
+        if prefix in skipped_test_prefixes:
             continue
         if prefix not in all_tests:
             shared.fail_with_error(f'orphan test output: {f}')