Another attempt at setting a linker

Author: rnijveld

.github/workflows/docker.yml

@@ -75,7 +75,15 @@ jobs:
               "apt-get update && apt-get install --assume-yes libssl-dev:arm64"
           ]
           EOF
-          export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=/usr/bin/aarch64-linux-gnu-gcc
+
+          mkdir .cargo
+
+          cat <<- 'EOF' > .cargo/config.toml
+          [target.aarch64-unknown-linux-gnu]
+          linker = "aarch64-linux-gnu-gcc"
+          EOF
+
+          export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc
           cross build --release --target ${{ matrix.rust_arch }} --features optimizations
           mv target/${{ matrix.rust_arch }}/release/dx target/dx.${{ matrix.docker_arch }}