Install AIS-catcher and run as a service.

aiscatcher.service

# AIS-catcher service for systemd

[Unit]
Description=AIS-catcher
Wants=network.target
After=network.target

[Service]
User=ais
RuntimeDirectory=aiscatcher
RuntimeDirectoryMode=0755
ExecStart=/usr/local/bin/AIS-catcher -o 0 -C /usr/share/aiscatcher/aisconf.json
SyslogIdentifier=aiscatcher
Type=simple
Restart=on-failure
RestartSec=30
RestartPreventExitStatus=64
Nice=-5

[Install]
WantedBy=default.target

aisconf.json

{
   "config":"aiscatcher",
   "version":"1",
   "serial": "00000001",
   "sharing": true,
   "sharing_key": "00000000-0000-0000-0000-000000000000",
   "input": "rtlsdr",
   "rtlsdr":{
      "active":true,
      "rtlagc":true,
      "tuner":"auto",
      "bandwidth":"192K",
      "sample_rate":"1536K",
      "biastee":false,
      "buffer_count":2
   },
   "model":{
      "fp_ds":true,
      "ps_ema":true
   },
   "server":{
      "active":true,
      "port":8100,
      "station":"Station Name",
      "lat":0.000,
      "lon":0.000,
      "share_loc":true,
      "realtime":true
   },
   "udp":[
      {
         "host":"0.0.0.0",
         "port":0
      }
   ]
}

install.sh

#!/bin/bash

# Download, compile and install AIS-catcher
sudo apt install -y git make gcc g++ cmake pkg-config
sudo apt install -y librtlsdr-dev
git clone https://github.com/jvde-github/AIS-catcher.git
cd AIS-catcher
mkdir build
cd build
cmake ..
make
sudo make install
cd ../..

# Create the user to run the service
sudo useradd -r ais
sudo usermod -a -G plugdev ais

# Install AIS-catcher configuration file
sudo mkdir /usr/share/aiscatcher
sudo cp aisconf.json /usr/share/aiscatcher
sudo chown ais:ais -R /usr/share/aiscatcher
sudo chmod 644 /usr/share/aiscatcher/aisconf.json

# Configure AIS-catcher to run as a service and start at boot
sudo cp aiscatcher.service /lib/systemd/system
sudo chmod 644 /lib/systemd/system/aiscatcher.service
sudo systemctl enable aiscatcher
sudo systemctl start aiscatcher