Podman

Fedora Platform

Fedora is the easiest platform to run the WASM app with container because the crun fedora package has supported WasmEdge as the default runtime. We don't need to make any changes to run WasmEdge apps on fedora platform. If you use other Linux distributions, go to next section.

Install podman and WasmEdge

sudo dnf -y install podman
sudo dnf -y install wasmedge

Run A simple WASI app on Fedora

Now, we could run wasm apps.

podman run --rm --annotation module.wasm.image/variant=compat-smart docker.io/wasmedge/example-wasi:latest /wasi_example_main.wasm 50000000

That's it.

Other Linux distributions

Prerequisites

1. Install and configure Podman

   Use the following commands to install podman on your system. Here I use Ubuntu as an example. For more different types of podman, please refer to Podman's installation instruction.

   sudo apt-get -y update
   sudo apt-get -y install podman

2. Install WasmEdge

3. Build and configure crun with WasmEdge support

   Next, configure and build a crun binary with WasmEdge support.

   git clone https://github.com/containers/crun
   cd crun
   ./autogen.sh
   ./configure --with-wasmedge
   make
   sudo make install
   # replace crun (be careful, you may want to do a backup first)
   mv crun $(which crun)

   Then, you can use crun -v to check if crun is installed successfully.

   crun --version
   # Output
   crun version 1.7.2.0.0.0.26-51af
   commit: 51af1448f60b69326cf26e726e14b38fcb253943
   rundir: /run/user/0/crun
   spec: 1.0.0
   +SYSTEMD +SELINUX +APPARMOR +CAP +SECCOMP +EBPF +WASM:wasmedge +YAJL

Run A simple WASI app

Now, we could run wasm apps.

podman run --rm --annotation module.wasm.image/variant=compat-smart docker.io/wasmedge/example-wasi:latest /wasi_example_main.wasm 50000000

For more information, you could refer to crun chapter.

A great open-source project introduces podman and WASM from a community called Kwasm. Check it out!