Building Custom Images

Part of the Docker course

The Dockerfile from the last lesson only ever installed software, it never brought any of your own files into the image, and it never controlled where inside the image its commands actually ran. A real application needs both: your source code copied in, and a sensible folder to work from.

FROM and RUN gave you a bag packed with software, but so far nothing of yours has gone into it. COPY takes files from your project folder, on your own computer, and places them inside the image at build time ...