Install `linux-image-generic` in x86_64 containerized builds
Currently `./build_in_container.sh -a x86_64` errors out when calling `virt-get-kernel` for x86_64:
```
virt-get-kernel: error: libguestfs error: /usr/bin/supermin exited with
error status 1.
```
This is because `/boot` is empty (contains no kernel) in the docker container.
As suggested in https://bugzilla.redhat.com/show_bug.cgi?id=1542892, we install `linux-image-generic` before invoking `virt-get-kernel`, if no `linux-image-*` was found.
Bug: 381162637
Change-Id: Ie6e2dc859fd6b66ca6ad7e3e01d8f15e2c339165
Flag: EXEMPT desktop only
Test: ./build_in_container.sh -a x86_64
diff --git a/build/debian/build.sh b/build/debian/build.sh
index 8f232aa..26234c7 100755
--- a/build/debian/build.sh
+++ b/build/debian/build.sh
@@ -97,6 +97,7 @@
if [[ "$arch" == "x86_64" ]]; then
packages+=(
libguestfs-tools
+ linux-image-generic
)
fi
DEBIAN_FRONTEND=noninteractive \