diff --git a/build.sh b/build.sh
index 4c2e347..75dd387 100755
--- a/build.sh
+++ b/build.sh
@@ -3,25 +3,30 @@
 image="docker.io/antora/antora"
 cmd="--html-url-extension-style=indexify site.yml"
 
-if [ "$(uname)" = "Darwin" ]; then
+if [ "$(uname)" == "Darwin" ]; then
     # Running on macOS.
     # Let's assume that the user has the Docker CE installed
     # which doesn't require a root password.
     echo ""
     echo "This build script is using Docker container runtime to run the build in an isolated environment."
     echo ""
-    docker run --rm -it -v "$(pwd):/antora" $image $cmd
+    docker run --rm -it -v $(pwd):/antora $image $cmd
 
-elif [ "$(expr substr "$(uname -s)" 1 5)" = "Linux" ]; then
+elif [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
     # Running on Linux.
+    # there isn't an antora/aarch64 container, antora can be installed locally
     # Check whether podman is available, else faill back to docker
     # which requires root.
 
-    if [ -f /usr/bin/podman ]; then
+    if [ -f /usr/local/bin/antora ]; then
+        /usr/local/bin/antora $cmd
+    elif [[ `uname -m` == "aarch64" ]]; then
+        echo "no antora/aarch64 container try just \`npm install -g @antora/cli @antora/site-generator-default\`"
+    elif [ -f /usr/bin/podman ]; then
         echo ""
         echo "This build script is using Podman to run the build in an isolated environment."
         echo ""
-	podman run --rm -it -v "$(pwd):/antora:z" $image $cmd
+        podman run --rm -it -v $(pwd):/antora:z $image $cmd
 
     elif [ -f /usr/bin/docker ]; then
         echo ""
@@ -29,13 +34,13 @@ elif [ "$(expr substr "$(uname -s)" 1 5)" = "Linux" ]; then
         echo ""
 
         if groups | grep -wq "docker"; then
-	    docker run --rm -it -v "$(pwd):/antora:z" $image $cmd
+	    docker run --rm -it -v $(pwd):/antora:z $image $cmd
 	else
             echo ""
             echo "This build script is using $runtime to run the build in an isolated environment. You might be asked for your password."
             echo "You can avoid this by adding your user to the 'docker' group, but be aware of the security implications. See https://docs.docker.com/install/linux/linux-postinstall/."
             echo ""
-            sudo docker run --rm -it -v "$(pwd):/antora:z" $image $cmd
+            sudo docker run --rm -it -v $(pwd):/antora:z $image $cmd
 	fi
     else
         echo ""