Shocker: Docker implemented in ~300 lines of bash
Shocker is a new implementation of Docker using approximately 300 lines of bash code. It is a fork of the original bocker project, updated for 2026, and includes several improvements and modernizations. Users must meet specific prerequisites to run shocker safely, as it requires root access and can modify network settings.
- ▪Shocker is a lightweight Docker alternative implemented in around 300 lines of bash.
- ▪It requires a btrfs filesystem and specific network configurations to operate correctly.
- ▪The project has been updated to support modern features like cgroups v2 and the Docker v2 registry API.
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shocker Docker implemented in around 300 lines of bash ⚡️ Fork of bocker (github.com/p8952/bocker). updated for 2026. Prerequisites Example Usage Functionality: Currently Implemented Functionality: Not Yet Implemented License Prerequisites The following packages are needed to run shocker. btrfs-progs curl python3 iproute2 iptables util-linux coreutils Additionally your system will need to be configured with the following: A btrfs filesystem mounted under /var/shocker (see below for setup help) A network bridge called bridge0 and an IP of 10.0.0.1/24 (gets created if missing) IP forwarding enabled in /proc/sys/net/ipv4/ip_forward A firewall routing traffic from bridge0 to a physical interface.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at GitHub.