Bump base kernel version for linux-image to 5.10.0-27

docker/linux-image.sh

@@ -55,14 +55,9 @@ max_kernel_version() {
 }
 
 main() {
-    local kmajor="5"
-    local kminor="10"
-    local kpatch="0"
-    local krelease="26"
-
     # arch in the rust target
     local arch="${1}" \
-        kversion="${kmajor}.${kminor}.${kpatch}-${krelease}"
+        kversion=5.10.0-27
 
     local debsource="deb http://http.debian.net/debian/ bullseye main"
     debsource="${debsource}\ndeb http://security.debian.org/ bullseye-security main"
@@ -161,7 +156,7 @@ main() {
         ;;
     x86_64)
         arch=amd64
-        kernel="${kmajor}\.${kminor}\.${kpatch}-.*-amd64"
+        kernel="${kversion}-amd64"
         deps=(libcrypt1:"${arch}")
         ;;
     *)
@@ -229,9 +224,8 @@ main() {
         # Need an exact match for start and end, to avoid debug kernels.
         # Afterwards, need to do a complex sort for the best kernel version,
         # since the sort is non-trivial and must extract subcomponents.
-        local kpackages
-        kpackages=$(apt-cache search ^linux-image-"$kernel$" --names-only)
-        names=$(echo "$kpackages" | cut -d ' ' -f 1)
+        packages=$(apt-cache search ^linux-image-"$kernel$" --names-only)
+        names=$(echo "$packages" | cut -d ' ' -f 1)
         kversions="${names//linux-image-/}"
         kernel=$(max_kernel_version "$kversions")
     fi