diff --git a/build.sh b/build.sh
index d4d2382..9b749e3 100755
--- a/build.sh
+++ b/build.sh
@@ -21,7 +21,7 @@ tmp=$(mktemp -u /tmp/alpine.XXXXXX)
 wget -qO- "$ALPINE_MAKEVM" \
 | sed 's|^alpine-devel@lists.alpinelinux.org-4a6a0840.rsa.pub|alpine-devel@lists.alpinelinux.org-5243ef4b.rsa.pub:MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvNijDxJ8kloskKQpJdx+\\nmTMVFFUGDoDCbulnhZMJoKNkSuZOzBoFC94omYPtxnIcBdWBGnrm6ncbKRlR+6oy\\nDO0W7c44uHKCFGFqBhDasdI4RCYP+fcIX/lyMh6MLbOxqS22TwSLhCVjTyJeeH7K\\naA7vqk+QSsF4TGbYzQDDpg7+6aAcNzg6InNePaywA6hbT0JXbxnDWsB+2/LLSF2G\\nmnhJlJrWB1WGjkz23ONIWk85W4S0XB/ewDefd4Ly/zyIciastA7Zqnh7p3Ody6Q0\\nsS2MJzo7p3os1smGjUF158s6m/JbVh4DN6YIsxwl2OjDOz9R0OycfJSDaBVIGZzg\\ncQIDAQAB\nalpine-devel@lists.alpinelinux.org-4a6a0840.rsa.pub|g' \
 | sed 's|^alpine-devel@lists.alpinelinux.org-4a6a0840.rsa.pub|alpine-devel@lists.alpinelinux.org-61666e3f.rsa.pub:MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAlEyxkHggKCXC2Wf5Mzx4\\nnZLFZvU2bgcA3exfNPO/g1YunKfQY+Jg4fr6tJUUTZ3XZUrhmLNWvpvSwDS19ZmC\\nIXOu0+V94aNgnhMsk9rr59I8qcbsQGIBoHzuAl8NzZCgdbEXkiY90w1skUw8J57z\\nqCsMBydAueMXuWqF5nGtYbi5vHwK42PffpiZ7G5Kjwn8nYMW5IZdL6ZnMEVJUWC9\\nI4waeKg0yskczYDmZUEAtrn3laX9677ToCpiKrvmZYjlGl0BaGp3cxggP2xaDbUq\\nqfFxWNgvUAb3pXD09JM6Mt6HSIJaFc9vQbrKB9KT515y763j5CC2KUsilszKi3mB\\nHYe5PoebdjS7D1Oh+tRqfegU2IImzSwW3iwA7PJvefFuc/kNIijfS/gH/cAqAK6z\\nbhdOtE/zc7TtqW2Wn5Y03jIZdtm12CxSxwgtCF1NPyEWyIxAQUX9ACb3M0FAZ61n\\nfpPrvwTaIIxxZ01L3IzPLpbc44x/DhJIEU+iDt6IMTrHOphD9MCG4631eIdB0H1b\\n6zbNX1CXTsafqHRFV9XmYYIeOMggmd90s3xIbEujA6HKNP/gwzO6CDJ+nHFDEqoF\\nSkxRdTkEqjTjVKieURW7Swv7zpfu5PrsrrkyGnsRrBJJzXlm2FOOxnbI2iSL1B5F\\nrO5kbUxFeZUIDq+7Yv4kLWcCAwEAAQ==\nalpine-devel@lists.alpinelinux.org-4a6a0840.rsa.pub|g' \
-| sh /dev/stdin -f qcow2 -c "$tmp" setup.sh \
+| sh /dev/stdin -f qcow2 -c "$tmp" -s 512M setup.sh \
 && echo Shrinking image, please wait \
 && qemu-img convert -c -O qcow2 "$tmp" "start_$1" \
 && qemu-img convert -c -O qcow2 "start_$1" "mid_$1" \