Make it easier to add new packages

[pmengelbert]

Converting the Archive struct looks something like this

A # at the start of a string indicates that it's a file on the host system (not in the container), the contents of which should replace the string. A current limitation imposed by dagger is that the file must be valid UTF-8, so no arbitrary binary files.

name: moby-containerd
webpage: "https://github.com/containerd/containerd"
makefile: "#moby-containerd/Makefile"
files:
  - source: "/build/src/bin"
    dest: "usr/bin"
  - source: "/build/man"
    dest: "/usr/share/man"
  - source: "/build/legal/LICENSE"
    dest: "/usr/share/doc/moby-containerd/LICENSE"
  - source: "/build/legal/NOTICE"
    dest: "/usr/share/doc/moby-containerd/NOTICE.gz"
    compress: true
systemd:
  - source: "/build/src/containerd.service"
    dest: "lib/systemd/system/containerd.service"
binaries:
  deb:
    - "/build/src/bin/containerd"
    - "/build/src/bin/containerd-shim"
    - "/build/src/bin/containerd-shim-runc-v1"
    - "/build/src/bin/containerd-shim-runc-v2"
    - "/build/src/bin/containerd-stress"
  rpm:
    - "/build/src/bin/containerd"
    - "/build/src/bin/containerd-shim"
    - "/build/src/bin/containerd-shim-runc-v1"
    - "/build/src/bin/containerd-shim-runc-v2"
    - "/build/src/bin/containerd-stress"
  win:
    - "/build/src/bin/containerd.exe"
    - "/build/src/bin/containerd-shim-runhcs-v1.exe"
    - "/build/src/bin/ctr.exe"
runtimeDeps:
  rpm:
    - "/bin/sh"
    - "container-selinux >= 2:2.95"
    - "device-mapper-libs >= 1.02.90-1"
    - "iptables"
    - "libcgroup"
    - "libseccomp >= 2.3"
    - "moby-containerd >= 1.3.9"
    - "moby-runc >= 1.0.2"
    - "systemd-units"
    - "tar"
    - "xz"
  deb:
    - "moby-runc (>= 1.0.2)"
recommends:
  deb:
    - "ca-certificates"
conflicts:
  deb:
    - "containerd"
    - "containerd.io"
    - "moby-engine (<= 3.0.12)"
  rpm:
    - "containerd"
    - "containerd-io"
    - "moby-engine <= 3.0.11"
replaces:
  deb:
    - containerd
    - containerd.io
provides:
  deb:
    - containerd
    - containerd.io
installScripts:
  rpm:
    - when: post-install
      script: "#moby-containerd/postinstall/rpm/postinstall"
    - when: pre-removal
      script: "#moby-containerd/postinstall/rpm/prerm"
    - when: post-upgrade
      script: "#moby-containerd/postinstall/rpm/upgrade"
  deb:
    - when: post-install
      script: "#moby-containerd/postinstall/deb/postinstall"
    - when: pre-removal
      script: "#moby-containerd/postinstall/deb/prerm"
    - when: post-removal
      script: "#moby-containerd/postinstall/deb/postrm"
description: |
  Industry-standard container runtime
   containerd is an industry-standard container runtime with an emphasis on
   simplicity, robustness and portability. It is available as a daemon for Linux
   and Windows, which can manage the complete container lifecycle of its host
   system: image transfer and storage, container execution and supervision,
   low-level storage and network attachments, etc.
   .
   containerd is designed to be embedded into a larger system, rather than being
   used directly by developers or end-users.