Codebox in Docker

This is a quick note log. I was able to setup a self-hosted web IDE for programming. Today I tested out,
but I also want to check out the open source Cloud9 IDE.

  • an open-source Web IDE for programming (in your browser)
  • Docker an open source container
  • Docker-Codebox. All I really want is this guy’s Dockerfile.

I already have Docker installed, that’s the easy bit.

Build the box:

git clone
cd docker-codebox
docker build -t ytjohncodebox .
# much building occurs

Run codebox in docker

This will run the environment on port 8000 and you’ll be editing files that are stored in a directory
called workspace1. ~/workspace1 on the host gets mounted into /workspace1 in the container.

cd ~
mkdir workspace1
docker run -p 8000:8000 -v ./workspace1:/workspace1 -t ytjohncodebox -p 8000 run /workspace1
# many things happen
# I end up seeing this:
# Codebox is running at http://localhost:8000

Now, I can access my server on port 8000 (ie, This instance is unprotected, it just asks
for an email to get started. But the part I skipped over is that I am actually using nginx to proxy and password
protect this instance.

I can hit Ctrl+C on the terminal to cancel my instance and all my edited files are safely stored in ~/workspace1.

Interesting bits:
I create a new file in the web browser and save it, I see this bit of json in the console output:

[events] watch.change.create : { change: 'create',
  path: '/irule.txt',
   { current: 
      { dev: 64513,
        mode: 33188,
        nlink: 1,
        uid: 0,
        gid: 0,
        rdev: 0,
        blksize: 4096,
        ino: 262847,
        size: 27,
        blocks: 8,
        atime: Wed Feb 26 2014 05:18:44 GMT+0000 (UTC),
        mtime: Wed Feb 26 2014 05:18:42 GMT+0000 (UTC),
        ctime: Wed Feb 26 2014 05:18:42 GMT+0000 (UTC) },
     old: null } }

One thing I really need is the ability to open a web terminal. When I do though, the terminal window appears for a
few seconds, and then vanishes. In the console, I see this:

[log][] new socket connected
[log][] open shell  { shellId: 'term2020-44',
  opts: { rows: 80, columns: 24, id: 'term2020-44' } }
[log][events] shell.spawn : { shellId: 'term2020-44' }
[log][events] shell.attach : { shellId: 'term2020-44' }
[log][events] : { shellId: 'term2020-44' }
[log][events] shell.exit : { shellId: 'term2020-44' }
[log][] socket disconnected
[log][] socket disconnected
[log][hooks] use hook settings

I got this same issue going through my nginx proxy and connecting directly on port 8000. A bit of text flashes
quickly on the “terminal” in the web browser, but closes too quickly for me to catch it. Perhaps it’s attempting to
run something that is not installed in the Docker instance. If I can fix that, then I just need to come up with a cool
way to launch workspaces and tie them into my nginx setup (or switch over to hipache
as my front-end webserver).

Anyways, just wanted to record these steps here and show how easy it could be to get your own self hosted IDE.

C270 Review

Acer C270 Chromebook

Last week I picked up a Chromebook, specifically the Acer C270. One of my coworkers uses one and kind of convinced me that one would be worth checking. I compared what was out there and other than the Pixel, the C270 had the best specs, including battery life (8.5 hours). It’s an Intel chipset, 16GB space, 2Gb of RAM, 1.4Ghz.

The good:

  • You get a lot of functionality for $200.
  • 7 seconds from power off to browser up and running.
  • Both an ssh client and vim are installed by default.
  • The keyboard is fairly responsive.
  • Runs forever without needing a charge.
  • You can install a real OS alongside ChromeOS (using Crouton) and switch between the two without rebooting.
  • It can do web pages and has a built in terminal shell.
  • With Ubuntu installed in a chroot environment, it does everything my regular computer does (and I almost never have to fire up the gui, which would be a battery drain).
  • This does Netflix, Amazon Prime, Hulu and
  • I haven’t done this, but one could replace the drive with a 128GB SSD for $100.

The bad:

  • Unfortunately the SD card slot isn’t very deep. Any SD Card you insert will stick out the side. I was hoping to drop a 64GB sdcard inside here and store videos/music/projects on this card. But since it sticks out so far, I might as well use a USB drive.
  • The trackpad requires an annoying amount of pressure to right click or click and hold (dragging/highlighting). It also makes a loud click when you do this.

After working on this for the last week, I decided that this Chromebook is exactly what I was hoping my Asus 904 netbook would be. A responsive, long lasting, carry anywhere type computer. It has made me regret purchasing my Nexus 7. I get a lot more daily use out o fthe 11″ Chromebook.

So what am I using this for? A lot of things. Anything really. My primary use case for this was actually amateur radio. In my ubuntu chroot environment, I installed CHIRP to program my radios, flidgi for operating digital modes, xlog for QSO logging, and Wine+APRSISCE for APRS action. So far these programs seem to work without issue. I’ve been able to program radios, send PSK data to PSKDroid on my cell phone using acoustic coupling, and view APRS activity using APRSISCE. When I’m not doing ham radio activity, I leave the X-windows session shut down (and it only takes about 5 seconds to start it up again).

Beyond ham radio, I’m using it to browse the web (duh), ssh into my servers, write python code, and right now… writing this post. Earlier today I fired up a Jenkins server on AWS. I’ve been meaning to set one up for a long time, and I have a year of AWS’s free tier currently. So from this chromebook, I selected a jenkins instance from the AWS market, SSH’d into and add pelican to it. Then I was able to setup a simple jenkins job that would publish my website from github. Then I went over to github and added a commit hook that calls my new jenkins job. Now, anytime I commit into my website’s github repository (including editing it from github directly), jenkins will automatically publish it. Doing this on my tablet, even with the keyboard, would have been frustrating.

Basically, despite even Google’s marketing, their Chromebook is NOT a web browser only type device. It is a full computer. If you’re used to Linux desktops and servers, you can do anything on it that you can on your existing setup. Yes, the impressive battery life is obtainable by using ChromeOS and using X-Windows or other cpu heavy applications will bring that battery life down. But even when I left X-windows up for long periods of time (for instance, letting the linux side download updates) it only had a moderate impact on my battery life.

If you’re looking for a “carry anywhere, do anything” computing device, the C270 is well worth the price.