Flask IP Calculator

Based on http://jodies.de/ipcalc, I re-wrote it using Python and Flask with major lifting from the ipaddress module.

Docker-Compose Setup

So that my Caddy config below makes a little more sense, I'm going to post all the relevant services from my docker-compose.yml file. However, only the ipcalc service is necessary for this setup. If you want the service to be available by itself, make sure to uncomment the ports lines. If used in a docker-compose.yml with the reverse_proxy service, then the ports are not needed since the services will both see each other.

Docker folder structure

~/docker
  |-- config/
  |    |-- caddy/
  |         |-- Caddyfile
  |         |-- www/
  |              |-- tools.domain.tld/
  |                   |-- web files
  |-- flask_ipcalc/
  |    |-- git sync'd repo
  |-- docker-compose.yml

docker-compose.yml

version: "3.3"
services:
  # flask ipcalc
  ipcalc:
    build: ./flask_ipcalc
    image: drowland/ipcalc:latest
    container_name: ipcalc
    restart: unless-stopped
#    ports:
#      - "8100:8100"
  # Web Host
  webhost:
    image: caddy
    container_name: webhost
    restart: unless-stopped
    volumes:
      - caddy_data:/data
      - caddy_config:/config
      - ./config/caddy/www:/srv
      - ./config/caddy/Caddyfile:/etc/caddy/Caddyfile
    ports:
      - "80:80"
      - "443:443"
  # Web Host PHP-FPM
  phpfpm:
    image: php:fpm-alpine
    container_name: phpfpm
    restart: unless-stopped
    volumes:
      - ./config/caddy/www:/srv

volumes:
  caddy_data:
    external: true
  caddy_config:

Reverse Proxy Setup

I used this app with my Caddy Server configuration, as a suffix on an existing site.

tools.domain.tld {
    root * /srv/tools.domain.tld
    php_fastcgi * phpfpm:9000
    file_server

    route /ipcalc {
        reverse_proxy ipcalc:8100
    }
}