I'm using a slightly modified version of the usual docker tramp integration
(below) which works fine to complete up to /docker:container_name: but where it
goes wrong is it opens files on the host computer, and performs completion from
the host file-system instead of in the container. The host is a Mac, though I
don’t think that should make a difference here. Can anyone help me fix this?
(require 'tramp)
(setq tramp-verbose 10)
(push
(cons
"docker"
'((tramp-login-program "docker")
(tramp-login-args (("exec" "-it") ("%h") ("/bin/bash")))
(tramp-remote-shell "/bin/bash")
(tramp-remote-shell-args ("-i") ("-c"))
))
tramp-methods)
(defadvice tramp-completion-handle-file-name-all-completions
(around dotemacs-completion-docker activate)
"(tramp-completion-handle-file-name-all-completions \"\" \"/docker:\" returns
a list of active Docker container names, followed by colons."
(if (equal (ad-get-arg 1) "/docker:")
(let* ((dockernames-raw (shell-command-to-string "/usr/local/bin/docker
ps | awk '$NF != \"NAMES\" { print $NF \":\" }'"))
(dockernames (cl-remove-if-not
#'(lambda (dockerline) (string-match ":$"
dockerline))
(split-string dockernames-raw "\n"))))
(setq ad-return-value dockernames))
ad-do-it))
