What this snippet does
A bind mount exposes the build context to one instruction without copying it into a layer.
Expected output
Dockerfile app.sh
Why practise typing this
Typing buildkit & buildx 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
- Building for two architecturesBuildKit & Buildx · advanced
- Using build platform argsBuildKit & Buildx · advanced
- Registry-backed build cacheBuildKit & Buildx · advanced
- Declarative buildx bakeBuildKit & Buildx · advanced
- Creating a builder instanceBuildKit & Buildx · advanced
- Exporting build output to diskBuildKit & Buildx · advanced