feat: deploy Caddy repository server for BaseOS packages

- Provision cs10-repo.mx-os VM with 500 GB system disk using OpenTofu.
- Create and apply Ansible role to install and configure Caddy to serve /srv/repo/.
- Update Koji Hub export script to rsync signed binary RPMs to the repo server and trigger createrepo_c.
- Record ADR-05 detailing this design decision and update package compilation guide.
- Log progress in the project journal.

Co-developed-by: Gemini AI <renich+gemini@woralelandia.com>
Signed-off-by: Rénich Bon Ćirić <renich@woralelandia.com>

opentofu/cs10-repo.tf

@@ -0,0 +1,150 @@
+resource "libvirt_domain" "cs10-repo" {
+  name        = "cs10-repo.mx-os"
+  memory      = var.guest_memory
+  memory_unit = "MiB"
+  vcpu        = var.guest_vcpu
+  running     = true
+  autostart   = true
+  type        = "kvm"
+
+  os = {
+    type            = "hvm"
+    arch            = "x86_64"
+    machine         = "q35"
+    firmware        = "efi"
+    loader_path     = "/usr/share/edk2/ovmf/OVMF_CODE_4M.secboot.qcow2"
+    loader_readonly = true
+    loader_secure   = true
+    loader_type     = "pflash"
+    nvram = {
+      path     = "/var/lib/libvirt/qemu/nvram/cs10-repo.mx-os_VARS.qcow2"
+      template = "/usr/share/edk2/ovmf/OVMF_VARS_4M.secboot.qcow2"
+      format   = "qcow2"
+    }
+  }
+
+  cpu = {
+    mode = "host-passthrough"
+  }
+
+  features = {
+    acpi = true
+    apic = {}
+  }
+
+  devices = {
+    disks = [
+      {
+        type = "volume"
+        driver = {
+          type = "qcow2"
+        }
+
+        source = {
+          volume = {
+            pool   = var.pool_name
+            volume = libvirt_volume.cs10-repo-system.name
+          }
+        }
+
+        target = {
+          dev = "vda"
+          bus = "virtio"
+        }
+      },
+      {
+        type     = "volume"
+        device   = "cdrom"
+        readonly = true
+        driver = {
+          type = "raw"
+        }
+
+        source = {
+          volume = {
+            pool   = var.pool_name
+            volume = libvirt_cloudinit_disk.cs10-repo-cloudinit.name
+          }
+        }
+
+        target = {
+          dev = "sda"
+          bus = "sata"
+        }
+      }
+    ]
+
+    interfaces = [
+      {
+        type = "network"
+        model = {
+          type = "virtio"
+        }
+        source = {
+          network = {
+            network = "default"
+          }
+        }
+      }
+    ]
+
+    consoles = [
+      {
+        type        = "pty"
+        target_type = "virtio"
+        target_port = "1"
+      }
+    ]
+
+    video = {
+      type = "virtio"
+    }
+  }
+}
+
+resource "libvirt_volume" "cs10-repo-system" {
+  name     = "cs10-repo.mx-os-system.qcow2"
+  pool     = var.pool_name
+  capacity = 536870912000 # 500 GiB (500 * 1024 * 1024 * 1024)
+  target = {
+    format = {
+      type = "qcow2"
+    }
+  }
+
+  create = {
+    content = {
+      url = "file://${var.base_image_path}"
+    }
+  }
+}
+
+resource "libvirt_cloudinit_disk" "cs10-repo-cloudinit" {
+  name  = "cs10-repo.mx-os-cloudinit.iso"
+
+  user_data = templatefile("templates/cloudinit.cfg.tftpl", {
+    root_password = var.root_password
+    hostname      = "cs10-repo.mx-os"
+  })
+
+  meta_data = yamlencode({
+    instance-id    = "cs10-repo.mx-os"
+    local-hostname = "cs10-repo.mx-os"
+  })
+}
+
+resource "libvirt_volume" "cs10-repo-cloudinit-volume" {
+  name  = "cs10-repo.mx-os-cloudinit.iso"
+  pool  = var.pool_name
+  target = {
+    format = {
+      type = "iso"
+    }
+  }
+
+  create = {
+    content = {
+      url = libvirt_cloudinit_disk.cs10-repo-cloudinit.path
+    }
+  }
+}