man-db package issues

[epilys]

Hello, I'm running a test that runs the man binary in arm-unknown-linux-gnueabihf/armv7-unknown-linux-gnueabihf/ any really targets. When I run man in the test I get the output:

This system has been minimized by removing packages and content that are\nnot required on a system that users do not log into.\n\nTo restore this content, including manpages, you can run the 'unminimize'\ncommand. You will still need to ensure the 'man-db' package is installed.\n

Which is expected from the minimized ubuntu image that cross-rs runs. But adding the following to Cross.toml makes no apparent difference:

[target.arm-unknown-linux-gnueabihf]
# Build with -static features.
pre-build = [
  "export DEBIAN_FRONTEND=noninteractive ",
  "dpkg --add-architecture $CROSS_DEB_ARCH",
  "apt-get update -y",
  "yes | unminimize",
  """
  apt-get install --assume-yes \
    man-db:$CROSS_DEB_ARCH \
  man-db \
  manpages \
  manpages:$CROSS_DEB_ARCH
  """,
]

Anyone can tell what I'm overlooking here? I've already deleted the images/contains from the docker daemon to force them to be built again so I must be missing something else.