def build_image(self, img):
cimg = self._download_with_cache(
- "https://cloud-images.ubuntu.com/releases/16.04/release-20190605/ubuntu-16.04-server-cloudimg-i386-disk1.img",
- sha256sum="e30091144c73483822b7c27193e9d47346dd1064229da577c3fedcf943f7cfcc")
+ "https://cloud-images.ubuntu.com/releases/bionic/release-20191114/ubuntu-18.04-server-cloudimg-i386.img",
+ sha256sum="28969840626d1ea80bb249c08eef1a4533e8904aa51a327b40f37ac4b4ff04ef")
img_tmp = img + ".tmp"
subprocess.check_call(["cp", "-f", cimg, img_tmp])
subprocess.check_call(["qemu-img", "resize", img_tmp, "50G"])