README.md

Add the two files below to a new testing directory.

To build the image, use the following.

docker build . -t this_one

To enter the image, use the following.

docker run --rm -it this:one

Dockerfile

FROM silex/emacs

ADD .emacs.d /root/.emacs.d
RUN emacs -batch -l ~/.emacs.d/init.el

WORKDIR /root/
CMD "bash"

init.el

;; .emacs.d/init.el
(setq package-archives
      '(("gnu" . "https://elpa.gnu.org/packages/")
        ("melpa" . "https://melpa.org/packages/")))
(package-initialize)

(unless package-archive-contents
  (package-refresh-contents))

(mapc 'package-install
      (seq-remove 'package-installed-p '(magit auctex)))