How To Build Docker Images Quicker

I'm currently building a docker image and running the container to run some tests in it for a Python application I'm working on. Currently the Dockerfile copies the files over from

Solution 1:

Docker builds using cached layers if it can. By adding files you have changed it invalidates the cache for all subsequent rules. Put the apt commands first and those will only be run the first time you build. See this blog for more info.