Skip to main contentCACHE [cached directories...]
The CACHE
instruction makes specific files/directories be shared across runs,
almost always as a performance improvement.
See the tuning performance documentation for more
details.
Examples
- Use
CACHE /var/cache/apt
to speed up RUN apt-get update
- Use
CACHE ~/.cache/go-build
to speed up RUN go install
- Use
CACHE ~/.npm ~/.next/cache ~/.yarn/cache
to speed up npm install
and
yarn install
Each webapp.io account gets a fixed amount of cache storage, and we periodically
delete old or inactive caches.