FYI you're not forced to use asciinema.org for hosting the recordings, it's fully self-hosting friendly: https://github.com/asciinema/asciinema-player/#quick-start
Last time I made an animation, like this, over a year ago, I just pasted it into a team Slack channel.
FYI you're not forced to use asciinema.org for hosting the recordings, it's fully self-hosting friendly: https://github.com/asciinema/asciinema-player/#quick-start