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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!