docker – Echoic Dev

Getting Up And Running With Jupyter Notebooks In Docker

Jupyter notebooks are handy for data science and other use cases that rely on iterative programming. If you’re already comfortable running Docker, here’s an easy one-liner to get up and running.

docker run --rm -p 10000:8888 -v ${PWD}:/home/jovyan/work jupyter/datascience-notebook:2023-03-09

The first port number (10000) can be changed to expose the notebook to a different port. The volume (-v) flag can be changed from the present directory (${PWD}) to a directory containing data you’d like to work with. To connect to the notebook, you’ll need to get the connection string from the output. It’ll look like this:

[I 2023-03-13 17:23:37.887 ServerApp] Jupyter Server 2.4.0 is running at:
[I 2023-03-13 17:23:37.887 ServerApp] http://bc7b3ff32303:8888/lab?token=6fd0237c4df26bc1e1af4a7c386c28c8573498850701f200
[I 2023-03-13 17:23:37.887 ServerApp]     http://127.0.0.1:8888/lab?token=6fd0237c4df26bc1e1af4a7c386c28c8573498850701f200

If you’re doing this from a Chromebook, you’ll have to get the real IP address from the output of ip addr show dev eth0. The port number is actually 10000 or whatever port you exposed. So the URL to paste in your browser will be something like this:

http://100.115.92.199:10000/lab?token=6fd0237c4df26bc1e1af4a7c386c28c8573498850701f200

Easy peasy!

How to develop websites with Astro + Docker + ChromeOS

I was reading StackShare’s Top Developer Tools 2022 and noticed Astro is the #1 tool so figured I should check it out. I use an Acer Spin 713 Chromebook for my daily driver and it works pretty well for local dev, but it does have a few quirks, namely that the dev environment runs in its own containerized environment so you have to keep track of things like the container IP.

# Get the IP address of the Crostini container
IP_ADDR=$(ip -4 addr show eth0 | grep -oP '(?<=inet\s)\d+(\.\d+){3}')

Next, start up a Node container. (If you don’t have Docker installed, follow this blog post.)

# Run the container
docker run -it --rm --entrypoint bash -p 3000:3000 node

Once you’re in the container, initialize a new Astro app.

npm create astro@latest
# say yes to the prompts

Run the app. The -- --host 0.0.0.0 is important.

npm run dev -- --host 0.0.0.0

Now jump into your browser, plug in http://${IP_ADDR}:3000, and you should be good to go.

So that’ll get you going. Now get to web devving!

Troubleshooting `error creating vxlan interface: operation not supported` on Docker on Ubuntu on Raspberry Pi

I recently did a big update on my home server and noticed my containerized services weren’t starting up. First, I looked into the Portainer service:

docker stack ps portainer --no-trunc

After searching around the internet, I found this advice to install a package.

sudo apt-get update && sudo apt-get install linux-modules-extra-raspi

After that, I got a scary warning about how the new kernel wouldn’t be loaded automatically so I should reboot.

sudo reboot now

Things still weren’t working after I rebooted, but restarting Docker seemed to kick Portainer into motion.

sudo systemctl restart docker