Web Shell (using GoTTY)

version: "3"
build:
  steps:
    - type: apt-get
      packages:
        [
          "build-essential",
          "curl",
          "git",
          "nano",
          "software-properties-common",
          "ssh",
          "sudo",
          "tar",
          "unzip",
          "vim",
          "wget",
          "zip",
        ]
    - type: command
      command: |
        VERSION=v1.0.1
        wget -O gotty.tar.gz https://github.com/yudai/gotty/releases/download/$VERSION/gotty_linux_amd64.tar.gz
        tar -xvf gotty.tar.gz && rm -rf gotty.tar.gz
        mv gotty /usr/local/bin/gotty
 
        tee /etc/systemd/system/gotty.service > /dev/null <<EOL
        [Unit]
        Description=GoTTY Service
        After=network.target
 
        [Service]
        # Starting GoTTY in a mode to allow writing to the shell from the browser, and opening up /bin/bash as default
        ExecStart=/usr/local/bin/gotty -w bash -l
        # Making GoTTY bind to port 7101
        Environment="GOTTY_ADDRESS=0.0.0.0" "GOTTY_PORT=7101" "TERM=xterm-256color"
        Restart=always
        # Making GoTTY session be for the devzero user (instead of `root`)
        User=devzero
        # The shell session will start at this directory
        WorkingDirectory=/home/devzero
        RestartSec=10
 
        [Install]
        WantedBy=multi-user.target
        EOL
 
        # Enable the service so it starts on boot
        systemctl enable gotty.service
      user: root