Man pages: refactor common options: authfile

Refactor the --authfile option.

My suggestion for review:
  1) run hack/markdown-preprocess-review and immediately Ctrl-Q to
     quit out of diffuse, which is completely unusable for this
     many files; then
  2) cd /tmp/markdown-preprocess-review.diffs/authfile
     - this is the directory created by the review script
  3) rm podman-image-sign* podman-log* podman-search.1.md.in
     - because they're essentially identical to podman-create
  4) rm podman-manifest-* podman-push.*
     - because they're 100% identical to podman-kube-play
  5) rm podman-kube-play*
     - because it's apart-from-whitespace identical to podman-build
       (use "wdiff" to confirm)
  6) rm podman-auto-update*
     - because that's the one I chose (hence == zzz-chosen.md)

(You should obviously run your own diff/cmp before rm, to confirm
my assertions about which files are identical).

After all that, you have a manageable number of files which
you can scan, read, diff against zzz-chosen.md, even run diffuse.

This option is IMHO the poster child for why we need this kind
of man page refactoring.

Signed-off-by: Ed Santiago <santiago@redhat.com>

1 files changed, 1 insertions, 6 deletions

diff --git a/docs/source/markdown/podman-create.1.md.in b/docs/source/markdown/podman-create.1.md.in
index f5301c60a..3e6b07225 100644
--- a/docs/source/markdown/podman-create.1.md.in
+++ b/docs/source/markdown/podman-create.1.md.in
@@ -83,12 +83,7 @@ error. It can even pretend to be a TTY (this is what most command line
 executables expect) and pass along signals. The **-a** option can be set for
 each of stdin, stdout, and stderr.
 
-#### **--authfile**=*path*
-
-Path of the authentication file. Default is ${XDG\_RUNTIME\_DIR}/containers/auth.json
-
-Note: You can also override the default path of the authentication file by setting the REGISTRY\_AUTH\_FILE
-environment variable. `export REGISTRY_AUTH_FILE=path`
+@@option authfile
 
 @@option blkio-weight