images: SHM is not available on all OSses
Thus ignore if the bind mount fails
See
@@ -27,7 +27,7 @@ mkdir /dev.container && {
# Keep some devices from the containerinal /dev
keep() { mount --rbind /dev.container/$1 /dev/$1 ; }
- keep shm
+ keep shm || :
keep mqueue
# Keep ptmx/pts for pty creation
keep pts
