This is a Plug&Play solution, which runs on Docker to make your old printer Wi-Fi compatible. You only need a Raspberry Pi with Wi-Fi (e.g. Zero W, 3B/3B+ - or 1/2 with Wi-Fi dongle). The bash file asks you for a SSID and a PASSWORD. These values are for the AP (access-point). Choose them correctly: it should not be your/neighbor network SSID, and the PASSWORD should be secure. After this, the bash file starts to install everything automatically (grab a cup of tea!). Then follows these instructions.