Commit b63176b1 authored by Guido Gunther's avatar Guido Gunther

build-image: use more portable shell

parent 4786420d
......@@ -68,7 +68,7 @@ echo "Installing extra packages ${packages}"
mkdir -p tmp/ files/
echo -n > files/meta.yml
if [ -n "${kernel_deb}" -a ! -f "files/${kernel_deb}" ]; then
if [ -n "${kernel_deb}" ] && [ ! -f "files/${kernel_deb}" ]; then
wget -Pfiles/ "${kernel_url}/${kernel_deb}"
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