The docker-compose.yml contains simple way to deploy to any docker enviroment.
You will have PiHole plus cloudflared docker with DoH enabled and only security upstreams.
Also it will have Caddy reverse proxy with https enabled and cert from Let's Encrypt.
In order to use DNS challenge as verification process needed for HTTPS cert, you will need to have scoped API tocken from cloudflare. Review this link.
If you will need to get DHCP in docker container, you can use dhcphelper, a tool for DHCP Relay Broadcast message.
At the moment you can not pass DHCP settings when you lunch a new docker container. See this ticket link.
But you can add already prepared in advance on your etc-pihole mounting volume setupVars.conf:
WEBPASSWORD=XXXXXXXXZZZZZZZZYYYYYYYYYY
WEBTHEME=default-dark
BLOCKING_ENABLED=true
PIHOLE_DOMAIN=lan
DHCP_LEASETIME=24
DHCP_ACTIVE=true
DHCP_START=10.X.X.X
DHCP_END=10.X.X.X
DHCP_ROUTER=10.X.X.X
DHCP_LEASETIME=48
PIHOLE_DOMAIN=lan
DHCP_IPv6=true
DHCP_rapid_commit=true
DNSSEC=true
QUERY_LOGGING=true
INSTALL_WEB_SERVER=true
INSTALL_WEB_INTERFACE=true
IPV4_ADDRESS=172.31.0.100
PIHOLE_DNS_1=172.31.0.53#54
PIHOLE_INTERFACE=eth0
Also you will need to mount etc-dnsmask volume in order to set the right DNS server address such as 02-dhcp-options.conf and add:
dhcp-option=option:dns-server,10.X.X.X