220 lines
8.7 KiB
Org Mode
220 lines
8.7 KiB
Org Mode
#+TITLE: spacemacs-docker distribution
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* Table of Contents :TOC_4_gh:noexport:
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- [[#description][Description]]
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- [[#screenshots][Screenshots]]
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- [[#features][Features:]]
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- [[#how-to-setup][How to setup]]
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- [[#how-to-use][How to use]]
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- [[#macos][MacOS]]
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- [[#windows][Windows]]
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- [[#gnulinux][GNU/Linux]]
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- [[#with-xpra-on-any-of-the-oses-and-via-web-browser][With Xpra on any of the OSes and via web-browser]]
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- [[#pros][Pros]]
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- [[#cons][Cons]]
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- [[#instruction][Instruction]]
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- [[#with-xpra-desktop-client][With Xpra desktop client]]
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- [[#via-web-browser][Via web-browser]]
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- [[#some-basic-docker-commands-to-get-you-going][Some basic docker commands to get you going]]
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* Description
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Spacemacs distribution that aims to automate dependency installation for
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Spacemacs layers and provide well tested Docker based development environment
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with GUI support on all major platforms and even [[https://i.imgur.com/wDLDMZN.gif][your web browser]].
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** Screenshots
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#+CAPTION: MacOS
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[[file:img/MAC_SP.jpg]]
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[[https://i.imgur.com/VcuqReF.jpg][HD MacOS image]]
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#+CAPTION: GNU/Linux
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[[file:img/LN_SP.jpg]]
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[[https://i.imgur.com/yDok0Q7.jpg][HD GNU/Linux image]]
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#+CAPTION: Windows
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[[file:img/WIN_SP.jpg]]
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[[https://i.imgur.com/WmsnCUo.jpg][HD Windows image]]
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** Features:
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- Automatically get Spacemacs layers dependency installed with [[https://github.com/syl20bnr/spacemacs/blob/develop/layers/%2Bdistributions/spacemacs-docker/deps-install/README.org][installer scripts]]
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- Reap the benefit of Emacs and other GNU/Linux tools on Windows/MacOS machines
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- Use [[https://hub.docker.com/][docker hub]] to auto-build your environment and store full backups for free
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- Build once and work with the same development environment everywhere
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- Run untrusted/risky code in the tunable sandbox with CPU/network/disk quotas
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- Try new tools, experiment and roll back changes when something goes wrong
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- Share your setup with others or extend someone else's development environment
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- Run multiple Emacs instances on the same machine isolated
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- An easy way to swap Emacs version (=emacs25= =emacs-snapshot=) for debugging
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- [[https://docs.docker.com/engine/reference/commandline/pause/][pause]] container to free resources temporarily
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- [[https://github.com/docker/docker/blob/1.13.x/experimental/checkpoint-restore.md][Checkpoint & Restore]] - maybe the fastest way to start a "heavy" environment
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- Friendly for networks with low upload speed/quotas.
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* How to setup
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The idea is to build your own image [[https://docs.docker.com/engine/reference/builder/#from][FROM]] the one of the provided base images
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([[https://goo.gl/Rb2Als][spacemacs/emacs25:develop]] and [[https://goo.gl/DFSenZ][spacemacs/emacs-snapshot:develop]]). Get [[https://docs.docker.com/engine/installation][docker]] for the OS of
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the machine that will run development environment and then use
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[[https://github.com/JAremko/spacemacs-docker-seed][spacemacs-docker-seed]] as an example to create [[https://docs.docker.com/docker-hub/builds/][automated builds on Docker Hub]] or
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[[https://docs.docker.com/engine/reference/commandline/build/][build it locally]].
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* How to use
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With one of the methods below replace =spacemacs/emacs25:develop= with your images.
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NOTE: The guide assumes that you want to run Docker and connect to it from
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the same machine.
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** MacOS
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Get [[https://www.xquartz.org][XQuartz]] and =open -a XQuartz= In the XQuartz preferences go to the "Security"
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tab and make sure you’ve got "Allow connections from network clients" ticked
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#+BEGIN_SRC sh
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ip=$(ifconfig en0 | grep inet | awk '$1=="inet" {print $2}')
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xhost + $ip
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docker run -ti --name spacemacs \
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-e DISPLAY=$ip:0 \
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-e TZ=<your_time_zone> \
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-v <path_to_your_workspace>:/mnt/workspace \
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spacemacs/emacs25:develop
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#+END_SRC
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[[https://fredrikaverpil.github.io/2016/07/31/docker-for-mac-and-gui-applications][source]],
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[[https://github.com/chanezon/docker-tips/blob/master/x11/README.md][another method]]
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** Windows
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Get [[https://www.cygwin.com][Cygwin]] with =xinit=, =xorg-server= and optionaly [[https://github.com/rprichard/winpty][winpty]](to run Emacs container with =-t=)
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#+BEGIN_SRC sh
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export DISPLAY=<your-machine-ip>:0.0
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startxwin -- -listen tcp &
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xhost + <your-machine-ip>
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#+END_SRC
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#+BEGIN_SRC sh
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docker run --name spacemacs \
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-e DISPLAY="$DISPLAY" \
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-v <path_to_your_workspace>:/mnt/workspace \
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spacemacs/emacs25:develop
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#+END_SRC
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Or with =-ti= via =winpty=
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#+BEGIN_SRC sh
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winpty docker run -ti --name spacemacs \
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-e DISPLAY="$DISPLAY" \
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-v <path_to_your_workspace>:/mnt/workspace \
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spacemacs/emacs25:develop
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#+END_SRC
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[[http://manomarks.github.io/2015/12/03/docker-gui-windows.html][source]]
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Also You can use [[https://www.reddit.com/r/emacs/comments/7a63r4/emacs_in_win10linuxdockerxserver_combo/][@ninrod 's setup]]
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** GNU/Linux
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Make sure that =$DISPLAY= variable is set
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#+BEGIN_SRC sh
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docker run -ti --name spacemacs \
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-e DISPLAY="unix$DISPLAY" \
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-e UNAME="spacemacser" \
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-e UID="1000" \
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-e TZ=<your_time_zone> \
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-v /tmp/.X11-unix:/tmp/.X11-unix:ro \
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-v /etc/localtime:/etc/localtime:ro \
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-v /etc/machine-id:/etc/machine-id:ro \
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-v /var/run/dbus:/var/run/dbus \
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-v <path_to_your_workspace>:/mnt/workspace \
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spacemacs/emacs25:develop
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#+END_SRC
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=UID= and preferably =UNAME= should match the host's user id. You can set them
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in your Dockerfile with [[https://docs.docker.com/engine/reference/builder/#env][ENV statements]].
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That's it! Now you should see Emacs window.
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But if it doesn't work You may need to allow local connection for the user
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#+BEGIN_SRC sh
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xhost +si:localuser:<UNAME>
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#+END_SRC
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Or allow local connection from the container's host-name
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#+BEGIN_SRC sh
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xhost +local:`docker inspect --format='{{ .Config.Hostname }}' spacemacs`
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#+END_SRC
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[[http://stackoverflow.com/questions/25281992/alternatives-to-ssh-x11-forwarding-for-docker-containers][source]]
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** With Xpra on any of the OSes and via web-browser
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*** Pros
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- Xpra has a client for GNU/Linux, Windows and MacOS + can work via web browser
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- Persistent server (you can connect and disconnect without disrupting Emacs)
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- Interactive screen sharing [[https://imgur.com/ijdSuX6][demo]]
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- Read/write rss/email with Emacs in web-browser (O_O) [[https://imgur.com/wDLDMZN][demo]]
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*** Cons
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- Lag spikes with some OSes
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*** Instruction
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It's a good idea to read [[https://github.com/JAremko/docker-x11-bridge][docker-x11-bridge]] and [[https://www.xpra.org/trac/][Xpra]] documentations, but
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here is a short instruction:
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**** With Xpra desktop client
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Get [[https://xpra.org/][Xpra]] client for your OS. then
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#+BEGIN_SRC sh
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docker run -ti --rm --name x11-bridge \
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-e MODE="ssh" \
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--net=host \
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-v ~/.ssh/pub_rsa:/etc/pub-keys/me.pub \
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-e DISPLAY=:14 \
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jare/x11-bridge
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docker run -ti --rm --name spacemacs \
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--volumes-from x11-bridge \
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-e DISPLAY=:14 \
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-e TZ=<your_time_zone> \
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spacemacs/emacs25:develop
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#+END_SRC
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Now you can connect to it with Xpra desktop client
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#+BEGIN_SRC sh
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<XPRA EXECUTABLE> attach --encoding=rgb \
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--ssh="ssh -o StrictHostKeyChecking=no -p 22" \
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ssh:xpra@localhost:14
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#+END_SRC
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**** Via web-browser
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#+BEGIN_SRC sh
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docker run -ti --rm --name x11-bridge \
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-e MODE="html" \
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--net=host \
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-e XPRA_PASSWORD=<PASSWORD> \
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-e DISPLAY=:14 \
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jare/x11-bridge
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docker run -ti --rm --name spacemacs \
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--volumes-from x11-bridge \
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-e TZ=<your_time_zone> \
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-e DISPLAY=:14 \
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spacemacs/emacs25:develop
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#+END_SRC
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Now visit http://localhost:10000/index.html?encoding=png&password=<PASSWORD>
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* Some basic docker commands to get you going
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- =docker rm -f spacemacs= - remove =spacemacs= container
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- =docker restart spacemacs= - restart =spacemacs= container
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- =docker rmi -f spacemacs/emacs25:develop= - remove =spacemacs/emacs25:develop= image
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- =docker pull spacemacs/emacs25:develop= - get newer =spacemacs/emacs25:develop= version
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- =docker images -a= - list all images
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- =docker ps -a= - list all containers
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- =docker run ... spacemacs/emacs25:develop= - run the [[https://github.com/JAremko/docker-emacs/blob/master/Dockerfile.emacs25#L63][default command]]
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- =docker run -ti ... spacemacs/emacs25:develop /bin/bash= - start bash
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- =docker run --network=host ...= - less overhead and no need to map ports
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- =docker exec spacemacs /usr/bin/emacs= - start =/usr/bin/emacs=
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With the running =spacemacs= container
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- =docker logs spacemacs= - print =spacemacs= container's logs
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- =docker cp <from_local_path> spacemacs:/<to_my_spacemacs_container_path>=
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- =docker cp spacemacs:/<from_my_spacemacs_container_path> <to_local_path>=
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- Manage data in containers with [[https://docs.docker.com/engine/tutorials/dockervolumes/][Docker volumes]]. Example
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- =docker volume create --name my-ws=
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- =docker run ... -v my-ws:/mnt/workspace ... spacemacs/emacs25:develop=
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- =docker run ... -v my-ws:/home/developer/workspace ... jare/vim-bundle=
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