A layer cache is invalidated by any change to the file it depends on; a cache mount is storage that outlives the layer entirely. The syntax directive at…
A named volume is managed by Docker and has no ownership relationship with the host, which removes the permission problem entirely for directories nobody edits. Masking vendor and…
The build context is everything not excluded, so a missing .dockerignore uploads the git history, the node modules and the local database to the daemon before anything is…
A bind mount passes numeric uids straight through, so a container running as uid 1000 writes files owned by whatever uid 1000 is on the host. The macOS…
nproc reports the host’s cores, so a worker pool sized from it starts thirty-two processes in a container entitled to two. The arithmetic is integer division, so a…
An image scanner identifies packages from manifests, so anything installed by a shell pipe or copied in as a binary is invisible to it. A green scan means…