add dnsmasq-pxe

dnsmasq/pxe/README.md

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+pxe
+===
+
+The Preboot Execution Environment (PXE) is an environment to bootstrap
+computers using a network card (i.e Ethernet, Token-Ring) independently of
+available data storage devices (like hard disks) or installed operating
+systems.
+
+## docker-compose.yml
+```yaml
+pxe:
+  image: vimagick/dnsmasq
+  volumes:
+    - ./dnsmasq.conf:/etc/dnsmasq.d/dnsmasq.conf
+    - ./tftpboot:/tftpboot
+  net: host
+  restart: always
+```
+
+## dnsmasq.conf
+
+```
+interface=eth0
+port=0
+no-hosts
+no-resolv
+server=8.8.8.8
+dhcp-range=192.168.1.10,192.168.1.20,1h
+dhcp-option=3,192.168.1.1
+dhcp-option=6,192.168.1.1
+dhcp-boot=pxelinux.0
+enable-tftp
+tftp-root=/tftpboot
+```
+
+> You can get all `dhcp-option` codes via `dnsmasq --help dhcp`.
+
+## up and running
+
+```bash
+cd ~/fig/pxe/
+
+mkdir tftpboot
+wget http://ftp.nl.debian.org/debian/dists/jessie/main/installer-amd64/current/images/netboot/netboot.tar.gz
+tar xzf netboot.tar.gz -C tftpboot
+
+docker-compose up -d
+docker-compose logs -f
+```
+
+> You should stop DHCP service on local network.

dnsmasq/pxe/dnsmasq.conf

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+interface=eth0
+port=0
+no-hosts
+no-resolv
+server=8.8.8.8
+dhcp-range=192.168.1.10,192.168.1.20,1h
+dhcp-option=3,192.168.1.1
+dhcp-option=6,192.168.1.1
+dhcp-boot=pxelinux.0
+enable-tftp
+tftp-root=/tftpboot

dnsmasq/pxe/docker-compose.yml

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+pxe:
+  image: vimagick/dnsmasq
+  volumes:
+    - ./dnsmasq.conf:/etc/dnsmasq.d/dnsmasq.conf
+    - ./tftpboot:/tftpboot
+  net: host
+  restart: always