Meanwhile, nix already has packaged more software than any other distro, and the vast majority of its software can be put into a container image with no additional dependencies (i.e. "hardened" in the same way as these are) with exactly zero extra work specific to each package.
The nixpkgs repository already contains the instructions to build and isolate outputs, there's already a massive cache infrastructure setup, builds are largely reproducible, and docker will have to make all of that for their own tool to reach parity... and without a community behind it like nix has.
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Docker has to maintain relatively complicated looking build instructions like this to make these images: https://github.com/docker-hardened-images/catalog/blob/b5c7a...
Meanwhile, nix already has packaged more software than any other distro, and the vast majority of its software can be put into a container image with no additional dependencies (i.e. "hardened" in the same way as these are) with exactly zero extra work specific to each package.
The nixpkgs repository already contains the instructions to build and isolate outputs, there's already a massive cache infrastructure setup, builds are largely reproducible, and docker will have to make all of that for their own tool to reach parity... and without a community behind it like nix has.