diff --git a/ci-conda.Dockerfile b/ci-conda.Dockerfile
index ab224c1..0a6e694 100644
--- a/ci-conda.Dockerfile
+++ b/ci-conda.Dockerfile
@@ -50,7 +50,8 @@ case "${LINUX_VER}" in
     yum clean all
     ;;
   *) 
-    echo "Unsupported LINUX_VER: ${LINUX_VER}" && exit 1
+    echo "Unsupported LINUX_VER: ${LINUX_VER}"
+    exit 1
     ;;
 esac
 EOF
@@ -90,7 +91,8 @@ case "${CUDA_VER}" in
         yum clean all
         ;;
       *) 
-        echo "Unsupported LINUX_VER: ${LINUX_VER}" && exit 1
+        echo "Unsupported LINUX_VER: ${LINUX_VER}"
+        exit 1
         ;;
     esac
     ;;
diff --git a/ci-wheel.Dockerfile b/ci-wheel.Dockerfile
index dcd38a7..81f1bd4 100644
--- a/ci-wheel.Dockerfile
+++ b/ci-wheel.Dockerfile
@@ -103,7 +103,8 @@ case "${LINUX_VER}" in
     popd
     ;;
   *) 
-    echo "Unsupported LINUX_VER: ${LINUX_VER}" && exit 1
+    echo "Unsupported LINUX_VER: ${LINUX_VER}"
+    exit 1
     ;;
 esac
 EOF
@@ -186,7 +187,8 @@ case "${LINUX_VER}" in
     CPPFLAGS="-I/usr/include/openssl" LDFLAGS="-L/usr/lib" pyenv install --verbose "${RAPIDS_PY_VERSION}"
     ;;
   *) 
-    echo "Unsupported LINUX_VER: ${LINUX_VER}" && exit 1
+    echo "Unsupported LINUX_VER: ${LINUX_VER}"
+    exit 1
     ;;
 esac
 EOF
diff --git a/citestwheel.Dockerfile b/citestwheel.Dockerfile
index 4178d3d..51bc413 100644
--- a/citestwheel.Dockerfile
+++ b/citestwheel.Dockerfile
@@ -54,7 +54,8 @@ ENV PATH="/pyenv/versions/${PYTHON_VER}/bin/:$PATH"
 # Needed to download wheels for running tests
 # Install the AWS CLI
 RUN <<EOF
-mkdir -p /aws_install && cd /aws_install
+mkdir -p /aws_install
+cd /aws_install
 curl "https://s3.amazonaws.com/aws-cli/awscli-bundle.zip" -o "awscli-bundle.zip"
 unzip awscli-bundle.zip
 ./awscli-bundle/install -i /usr/local/aws -b /usr/local/bin/aws