Lesson 03 · 12 min
Volumes and networks
Where to keep data, how containers find each other by name, and what port publishing really does.
12 minLesson 3 of 5Practice includedAsk AI on any point
A container's file system disappears with it: one docker rm and all written data is gone. So everything that has to outlive the container (a database, uploaded files) lives in a volume or on the host disk.
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