Install RunCVM and then launch an Alpine Container VM

by struanb 10 months ago

GNU/Linux ◆ xterm 158 views

Install RunCVM and launch an Alpine Container VM.

Commands:

curl -s -o - https://raw.githubusercontent.com/newsnowlabs/runcvm/main/runcvm-scripts/runcvm-install-runtime.sh | sudo sh
docker run --runtime=runcvm --rm -it --cpus=4 -m 1g alpine

Markers

00.0 - Install RunCVM
37.0 - Launch an Alpine container-VM

Notes

This demo was itself recorded within a clean RunCVM container-VM, built and launched as following.

Build:

cat <<EOF | docker build --tag=ubuntu-docker -
FROM ubuntu:jammy
RUN apt update && apt -y install apt-utils kmod wget iproute2 systemd ca-certificates curl gnupg udev dbus sudo psmisc asciinema && curl -fsSL https://get.docker.com | bash
RUN echo kvm_intel >>/etc/modules
RUN useradd --create-home --shell /bin/bash --groups sudo,docker dockside && echo dockside:dockside | chpasswd && echo export PS1='\$ ' PROMPT_COMMAND='' >>/home/dockside/.bashrc
RUN echo 'dockside ALL=(ALL) NOPASSWD: ALL' >/etc/sudoers.d/dockside
ENTRYPOINT ["/lib/systemd/systemd"]
EOF

Run:

docker run -d --runtime=runcvm -m 2g --name=ubuntu-docker --env=RUNCVM_DISKS='/disks/docker,/var/lib/docker,ext4,2G;/disks/opt,/opt,ext4,2G' -v /asciinema:/asciinema ubuntu-docker; docker exec -it -u dockside ubuntu-docker bash; docker rm -f ubuntu-docker

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by struanb 10 months ago

See all

You can download this recording in asciicast v2 format, as a .cast file.

Download

Replay in terminal

You can replay the downloaded recording in your terminal using the asciinema play command:

asciinema play 630469.cast

If you don't have asciinema CLI installed then see installation instructions.

Use with stand-alone player on your website

Download asciinema player from the releases page (you only need .js and .css file), then use it like this:

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" type="text/css" href="asciinema-player.css" />
</head>
<body>
  <div id="player"></div>
  <script src="asciinema-player.min.js"></script>
  <script>
    AsciinemaPlayer.create(
      '/assets/630469.cast',
      document.getElementById('player'),
      { cols: 90, rows: 30 }
    );
  </script>
</body>
</html>

See asciinema player quick-start guide for full usage instructions.

While this site doesn't provide GIF conversion at the moment, you can still do it yourself with the help of asciinema GIF generator utility - agg.

Once you have it installed, generate a GIF with the following command:

agg https://asciinema.org/a/630469 demo.gif

Or, if you already downloaded the recording file:

agg demo.cast demo.gif

Check agg --help for all available options. You can change font family and size, select color theme, adjust speed and more.

See agg manual for full usage instructions.