[completion/zsh] add volume completion
This provides completion for `docker run ... -v <TAB>`.
This closes (part of)
@@ -661,7 +661,7 @@ __docker_container_subcommand() {
"($help)*--ulimit=[ulimit options]:ulimit: "
"($help)--userns=[Container user namespace]:user namespace:(host)"
"($help)--tmpfs[mount tmpfs]"
- "($help)*-v[Bind mount a volume]:volume: "
+ "($help)*-v[Bind mount a volume]:volume:_directories -W / -P '/' -S '\:' -r '/ '"
"($help)--volume-driver=[Optional volume driver for the container]:volume driver:(local)"
"($help)*--volumes-from=[Mount volumes from the specified container]:volume: "
"($help -w --workdir)"{-w=,--workdir=}"[Working directory inside the container]:directory:_directories"
