Add fallback locations for the debian images

Signed-off-by: Anders F Björklund <[email protected]>

Author: afbjorklund

examples/debian.yaml

@@ -1,11 +1,19 @@
 # This example requires Lima v0.7.0 or later
 images:
+# Try to use release-yyyyMMdd image if available. Note that release-yyyyMMdd will be removed after several months.
 - location: "https://cloud.debian.org/images/cloud/bullseye/20230515-1381/debian-11-genericcloud-amd64-20230515-1381.qcow2"
   arch: "x86_64"
   digest: "sha512:bf6e2e8550dd1f296338e8f6dedaa7bd3d4e31de73ef33e46882430af055a2ce0df9da27c30c159f8d544220a6cf428083724685c4472334fcd7c1191cbbfe27"
 - location: "https://cloud.debian.org/images/cloud/bullseye/20230515-1381/debian-11-genericcloud-arm64-20230515-1381.qcow2"
   arch: "aarch64"
   digest: "sha512:895806e31400c6322fbf240349228a5cf8040e1fac8d1ab3e12ee3a0e11d15ee733ff6d27e0b4db9cbd7adac02dfda1eff34f3174c7898caefb4026c51269823"
+# Fallback to the latest release image.
+# Hint: run `limactl prune` to invalidate the cache
+- location: "https://cloud.debian.org/images/cloud/bullseye/latest/debian-11-genericcloud-amd64.qcow2"
+  arch: "x86_64"
+- location: "https://cloud.debian.org/images/cloud/bullseye/latest/debian-11-genericcloud-arm64.qcow2"
+  arch: "aarch64"
+
 mounts:
 - location: "~"
 - location: "/tmp/lima"