What this snippet does
A bind mount shadows whatever the image had at that path, including installed dependencies.
Expected output
ls: /app/node_modules: No such file or directory
Why practise typing this
Typing volumes & storage code builds muscle memory for the symbols and indentation Docker uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More Docker practice
- Persisting database dataVolumes & Storage · beginner
- Live-reloading sourceVolumes & Storage · beginner
- Protecting node_modulesVolumes & Storage · intermediate
- VOLUME freezes later writesVolumes & Storage · intermediate
- In-memory scratch spaceVolumes & Storage · advanced
- Mounting config read-onlyVolumes & Storage · intermediate