instruction: Create a Dockerfile for fundamentals
output: ```dockerfile
  from the host is disabled using --gateway_mode_ipv[46], container creation will no longer fail. The unused fields may be needed if the gateway endpoint changes when networks are connected or disconnected. A message about the unused fields will be logged. moby/moby#48575Do not create iptables nat-POSTROUTING masquerade rules for a container's own published ports, when the userland proxy is enabled. moby/moby#48854IPv6Add docker network create option --ipv4. To disable IPv4 address assignment for a network, use docker network create --ipv4=false [...]. docker/cli#5599Daemon option --ipv6 ("ipv6": true in daemon.json) can now be used without fixed-cidr-v6. moby/moby#48319IPAM now handles subnets bigger than "/64". moby/moby#49223Duplicate address detection (DAD) is now disabled for addresses assigned to the bridges belonging to bridge networks. moby/moby#48609Modifications to host-gateway, for compatibility with IPv6-only networks. moby/moby#48807When special value host-gateway is used in an --add-host option in place of an address, it's replaced by an address on the Docker host to make it possible to refer to the host by name. The address used belongs to the default bridge (normally docker0). Until now it's always been an IPv4 address, because all containers on bridge networks had IPv4 addresses.Now, if IPv6 is enabled on the default bridge network, /etc/hosts entries will be created for IPv4 and IPv6 addresses. So, a container that's only connected to IPv6-only networks can access the host by name.The --host-gateway-ip option overrides the address used to replace host-gateway. Two of these options are now allowed on the command line, for one IPv4 gateway and one IPv6.In the daemon.json file, to provide two addresses, use "host-gateway-ips". For example, "host-gateway-ips": ["192.0.2.1", "2001:db8::1111"].Bug fixes and enhancementsAdd IPv6 loopback address as an insecure registry by default. moby/moby#48540Add support for Cobra-generated completion scripts for dockerd. moby/moby#49339Fix DNS queries failing when containers are launched via systemd auto-start on boot moby/moby#48812Fix Docker Swarm mode ignoring volume.subpath docker/cli#5833Fix docker export continuing the export after the operation is canceled. moby/moby#49265Fix docker export not releasing the container's writable layer after a failure. moby/moby#48517Fix docker images --tree unnecessary truncating long image names when multiple names are available docker/cli#5757Fix a bug where a container with a name matching another container's ID is not restored on daemon startup. moby/moby#48669Fix an issue preventing some IPv6 addresses shown by docker ps to be properly bracketed docker/cli#5468Fix bug preventing image pulls
  ```