ref: https://github.com/microsoft/vscode-remote-release/issues/2133#issuecomment-1414408360

devopen.sh

#!/bin/bash
function devopen() {
    local workspace_folder="$(readlink -f "$1")"

    if [ -d "$workspace_folder" ]; then
        local wsl_path="$(wslpath -w "$workspace_folder")"
        local path_id=$(printf "%s" "$wsl_path" | xxd -ps -c 256)

        code --folder-uri "vscode-remote://dev-container%2B${path_id}/workspaces/$(basename "$workspace_folder")"
    else
        echo "Usage: devopen <directory>" 1>&2
        echo "" 1>&2
        echo "Error: Directory ${1@Q} does not exist" 1>&2
        false
    fi
}

devopen $*