In these instructions it’s possible to build minimal containers without package managers but these are multi-purpose base images. Since Redhat and Ubuntu seem to be the most common operating systems available today I’ll provide instructions for both. My base container size with scratch alone is 1.84 kilobytes.īuilding your own image starts with install of the target operating system. This would start the container run the executable and end the container. For our example lets assume we have a basic c program called hello-world and is compiled: FROM Scratch Do not expect scratch to have a package manager or even command line. If you have a compiled binary that will work in the container scratch may be a perfect minimal container. Scratch is build into docker and is provided as a minimal linux environment that cannot do anything. When creating your own base image you have two choices build one or use scratch.
Every container image starts with a base in many cases this base image is pulled from Dockerhub or your own repository. Docker images are compiled in layers using a set of instructions contained in a text file called Dockerfile.
0 kommentar(er)
