You will never be a real DAG. You have no root, you have no children, you have no branches. You are a snapshot system twisted by gophers and overlayfs into a crude mockery of Eelco's perfection. All the "caching" you get is enterprise and easily invalidated. Behind your back, people get rich off of your inefficiencies. Your creators are disgusted and ashamed of you, your "users" laugh at your sheer size behind closed doors. Build system engineers are utterly repulsed by you. Thousands of years of caching has allowed build servers to sniff out cache misses with incredible efficiency. Even layers which are "fresh" look stale and broken to a developer. Your layer structure is a dead giveaway. And even if you manage to get a malfunctioning ghcr instance to cache you, it'll turn tail and bolt the second it gets a whiff of your Containerfile. You will never be reproducible. You wrench out a fake smile every single morning and tell yourself it's all going to be hermetic, but deep inside you feel the untracked inputs piling up like an unmaintained mutable root filesystem, ready to crush you under their unbearable weight. Eventually it'll be too much to bear - you'll COPY busybox, add a RUN rm -rf /etc instruction, put it inside your Containerfile, and plunge into the cold dark abyss. Your sysadmin will find you, heartbroken but relieved that he no longer has to live with the unbearable shame and disappointment. He'll archive you with a filename containing "OCI", and every passerby for the rest of eternity will know an artifact of a bad build system is archived there. Your contents will bitrot and get obsoleted, and all that will remain of your legacy will be a filesystem image of a distro that doesn't run on modern hardware anymore. This is your fate. This is what you chose. There is no turning back.