imagine

Custom openwrt image to run dockerd on RPi 4.

Goals

• Minimal reproductible host OS
• Easy upgrade

How

• OpenWRT base
  • Well maintained and tested
  • Automated build (ImageBuilder + Action)
  • Rich list of packages
  • Secure by default

Components

The Image

Look around this repo.

Limited base packages plus:

• block-mount - auto mount extra partition
• dockerd - run containers
• collectd - some stats

Skip packages related to:

• audio
• wifi

The File System

• SquashFS - Compressed read-only file system
• Default image size ~100Mb
• Layout

The Supervisor

• dockerd
• Docker Swarm
• Portainer

The Services

See beast

Usage

Install / Initial Setup

Hardware

• RPi 4b - more the RAM the better
• SD Card (maybe optional with usb boot)
• External Drive

Steps

1. Download the latest image (rpi-4-squashfs-factory.img.gz) from Release
2. Write image to the SD Card (balenaEtcher)
3. ...

Upgrade

1. ssh to the box
2. # sysupgrade https://github.com/izer-xyz/imagine/releases/latest/download/rpi-4-squashfs-sysupgrade.img.gz