"KataCoda" was an early solution for "running docker shell from web browser".
recently the free version was removed ("blockchain mining abuses?"),
it is now only available with O'Reilly Learning subscription.
Leveraging Katacoda Technology - O'Reilly Media
but there are some good alternatives available
List of Hands-On Cloud Native Learning Platforms
- A Cloud Guru
- AppSecEngineer
- Cloud Academy
- Cloudyuga
- CodeCrafters
- Developer Sandbox for Red Hat OpenShift
- Instruqt
- Katacoda
- Killer.sh
- KodeKloud
- KubeAcademy
- O’Reilly Interactive
- Play with Docker
- Play with Kubernetes
- Pluralsight
Top 5 Free Resources to Learn Docker | LinkedIn
KataCoda Alternatives and Similar Sites / Apps | AlternativeTo
Killercoda: App Reviews, Features, Pricing & Download | AlternativeTo
DevOps Online Training Courses | KodeKloud