ci: add test on big-endian arch in CI

.github/workflows/ci.yml

@@ -148,3 +148,45 @@ jobs:
       - uses: actions/checkout@v3
       - uses: dtolnay/[email protected]
       - run: cargo check --tests --all-features
+
+  bigendian:
+    name: Test big-endian arch
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: uraimo/run-on-arch-action@v2
+        with:
+          arch: s390x
+          distro: ubuntu_latest
+
+          # Used to cache the install steps
+          githubToken: ${{ github.token }}
+
+          install: |
+            # Install rust using rustup
+            apt-get update -y
+            apt-get install -y curl
+            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+
+            # Install deps needed to build C crates
+            apt-get install -y build-essential
+
+            # Install bindgen dependencies
+            apt-get install -y llvm-dev libclang-dev clang
+
+            # Install openssh dev
+            apt-get install -y libssl-dev
+
+            # Install git to speed update of crates.io idnex
+            apt-get install -y git
+
+            # Trick to update the crates.io index, as it takes a long time
+            # to build
+            export PATH="~/.cargo/bin:$PATH"
+            export CARGO_NET_GIT_FETCH_WITH_CLI=true
+            cargo install empty-library
+
+          run: |
+            export PATH="~/.cargo/bin:$PATH"
+            cargo test
+            cargo test --features openssl