podman build does not receive --default-mounts-file option

[edsantiago]

Podman has an undocumented --default-mounts-file option used in testing. This option is silently ignored by podman build:

# mkdir -p /tmp/podmantest/secrets
# echo /tmp/podmantest/secrets:/run/secrets >/tmp/podmantest/mounts.conf
# echo shhhh >/tmp/podmantest/secrets/file
# echo "hey! this is /usr/share/rhel/secrets" >/usr/share/rhel/secrets/original-mountdir

# printf "FROM quay.io/libpod/testimage:20200929\nRUN ls -l /run/secrets\n" | podman --default-mounts-file=/tmp/podmantest/mounts.conf build -t foo -
STEP 1: FROM quay.io/libpod/testimage:20200929
STEP 2: RUN ls -l /run/secrets
total 4
-rw-r--r--    1 root     root            37 Jan 25 21:02 original-mountdir
STEP 3: COMMIT foo
--> 7f4d4f62a68
7f4d4f62a68ae48d7a110829227c0c7b100b1097dac7d187cd93e98a4cce6dbe
# rm -f  /usr/share/rhel/secrets/original-mountdir    ! clean up

Without this, there is no practical way to address issue #8679. (See also: PR #9091 which is a rough start)

[github-actions]

A friendly reminder that this issue had no activity for 30 days.

[mheon]

@rhatdan Did you enable this one with your recent PRs to add missing podman build options?

[TomSweeneyRedHat]

I only play the part of @rhatdan on TV, but he did include it in #9094.
Closing