Use volume for PXE config files

metal/roles/pxe-server/templates/dhcp/Dockerfile

@@ -4,6 +4,4 @@ RUN apk add dhcp
 
 RUN touch /var/lib/dhcp/dhcpd.leases
 
-COPY dhcpd.conf /etc/dhcp/dhcpd.conf
-
 CMD [ "dhcpd", "-f", "-cf", "/etc/dhcp/dhcpd.conf" ]

metal/roles/pxe-server/templates/docker-compose.yml

@@ -3,11 +3,14 @@ version: "3"
 services:
   dhcp:
     build: ./dhcp
+    volumes:
+      - ./dhcp/dhcpd.conf:/etc/dhcp/dhcpd.conf
     network_mode: host
   tftp:
     build: ./tftp
     network_mode: host
     volumes:
+      - ./tftp/tftpboot/grub.cfg:/var/lib/tftpboot/grub.cfg
       - ./mnt/EFI/fedora/grubx64.efi:/var/lib/tftpboot/grubx64.efi
       - ./mnt/images/ignition.img:/var/lib/tftpboot/ignition.img
       - ./mnt/images/pxeboot/initrd.img:/var/lib/tftpboot/initrd.img

metal/roles/pxe-server/templates/tftp/Dockerfile

@@ -2,6 +2,4 @@ FROM alpine:3
 
 RUN apk add tftp-hpa
 
-COPY ./tftpboot /var/lib/tftpboot
-
 CMD [ "in.tftpd", "--foreground", "--secure", "/var/lib/tftpboot" ]