incorrect environment variable assignment

.github/workflows/release.yml

@@ -41,6 +41,7 @@ jobs:
             conan build .
           else
             sudo apt-get install -y gcc-aarch64-linux-gnu
+            export CC=gcc-aarch64-linux-gnu
             conan install . --profile linux-arm-profile.txt --build=missing
             conan build . --profile linux-arm-profile.txt
           fi
@@ -49,7 +50,7 @@ jobs:
         run: |
           TAG=${GITHUB_REF##refs/tags/}
           OS=$(uname -s | tr '[:upper:]' '[:lower:]')
-          ARCH=$(uname -m)
+          ARCH=${{ matrix.arch }}
           FOLDER="chloride-$TAG-$OS-$ARCH"
           TAR="$FOLDER.tar.gz"
           mv build/bin "$FOLDER"