Short history of WASM and integration with Docker/containerd

1. Catalin Jora @ Docker meetup | Software Circus| 8 December 2022 Amsterdam

2. Catalin Jora
- Independent Cloud Engineer @FikaWorks Collective
- Docker NL Community Leader
- FikaWorks Podcast Host
- Tech event volunteer/organizer (KubeCon, DockerCon, Serverless Days,
Software Circus)
- I’ve built kubernetes.io/docs/tutorials/kubernetes-basics - interactive
tutorial
@jocatalin | linkedin.com/in/jocatalin

3. @jocatalin
- What is WASM?
- Integration with Docker & containerd (Why and How)
- Demo and use cases

4. @jocatalin
WASM 101 - WASM = Web Assembly (W3C standard)
- Started in 2015 by Mozilla

5. @jocatalin
WASM 101
- fast, light alternative to the Linux and Windows
containers
- Compiles app code written in 40+ languages (Rust is
the WASM darling)
- https://github.com/appcypher/awesome-wasm-langs
- Runs inside sandboxed environments

6. An introduction to WebAssembly | Coding Tech https://www.youtube.com/watch?v=3sU557ZKjUs

7. @jocatalin
WASI 101
WASI = Web Assembly system interfaces (developed by Bytecode
Alliance)
- Makes WASM usable
- File system, files, sockets, generate random
numbers
- Not browser dependent

8. @jocatalin
WASI limitations (Dec 2022 A.D.)
- No multitasking
- No garbage collection

9. @jocatalin
WASM Landscape
https://landscape.cncf.io/wasm?fullscreen=yes&zoom=150
- Runtimes|Platforms that implement web-assembly:
- WasmEdge
- Wasmcloud
- wasmCloud is a platform for writing portable business logic that can run anywhere from
the edge to the cloud
- Fermyon
- Fermyon Cloud is the easiest way to deploy and manage cloud native WebAssembly
applications

10. Docker + WASM integration wishlist:
https://github.com/docker/roadmap/issues/426

11. @jocatalin
Source: docker.com blog

12. @jocatalin
Demo
Demo code:
https://docs.docker.com/
desktop/wasm/
Pre-requisites for WASM
in Docker Desktop :
● containerd image store enabled
● Docker Desktop Version 4.15

13. Examples of WASM apps
https://github.com/second-state/wasmedge-containers-
examples
@jocatalin

14. @jocatalin
WASM vs Docker on the deployment stack
Source: cosmonic.com

15. What about wasm and K8s?
https://docs.krustlet.dev/intro/intro/

16. @jocatalin
More resources:
Presentations:
WASM Day KubeCon NA 2022:
https://www.youtube.com/watch?v=fyoqHl9MaP0&list=PLj6h78yzYM2PzLhPvZIihwPShNuXP01C5
Chat Docker CEO + Kelsey Hightower:
https://cosmonic.com/blog/webassembly-with-kelsey-hightower-and-docker-ceo-scott-johnston-kubeco
n-na-2022/
Docker + WASM: https://docs.docker.com/desktop/wasm/
History: https://blog.mozilla.org/luke/2015/06/17/webassembly/
WASM community: https://www.wasm.builders/ (tutorials)

17. Do you need this?
Use-cases for WASM
@jocatalin

18. twitter.com/JoCatalin
linkedin.com/in/JoCatalin
Thanks
Questions?