Jackett

Here you can find instruction to install Jackett on Alpine Linux.
# requirements on alpine/musl:
apk add --no-cache sqlite-libs gcompat bash icu-libs krb5-libs libgcc libintl libssl1.1 libstdc++ zlib curl

# Download and Extract Musl build to /opt:
cd /opt
RELEASE=$(curl -s https://api.github.com/repos/Jackett/Jackett/releases/latest | grep "tag_name" | awk '{print substr($2, 3, length($2)-4) }')
wget https://github.com/Jackett/Jackett/releases/download/v${RELEASE}/Jackett.Binaries.LinuxMuslAMDx64.tar.gz
tar -C . -xvf "Jackett.Binaries.LinuxMuslAMDx64.tar.gz"
rm "Jackett.Binaries.LinuxMuslAMDx64.tar.gz"

# setup user and group
addgroup -S jackett
adduser -S -D -h /opt/JackettData -s /sbin/nologin jackett -G jackett
addgroup -S media && addgroup -S jackett media

# setup permissions
chown -R jackett:jackett /opt/Jackett
chown -R jackett:jackett /opt/JackettData

# create openrc service
tee /etc/init.d/jackett <<EOF
#!/sbin/openrc-run

command="/opt/Jackett/jackett"
command_args="--NoRestart"
command_user="jackett:jackett"
command_background=true

name="\${RC_SVCNAME}"
basedir="/opt/Jackett"
datadir="/opt/JackettData"

start_stop_daemon_args="--chdir \${basedir}"
pidfile="/run/\${RC_SVCNAME}.pid"  

depend() {
  after network-online
  use network-online 
}

stop_pre() {
  # from jackett_launcher.sh
  while pgrep -u "\$(whoami)" JackettUpdater > /dev/null; do
    sleep 1
  done
}

start_pre() {
  checkpath -q -d -m 0777 -o "\${command_user}" \\
  \${basedir} \\
  \${datadir}
  export XDG_CONFIG_HOME=\${datadir}
  rm -f "\${datadir}/\${RC_SVCNAME}.pid"
}
EOF

chmod +x /etc/init.d/jackett

# add service to autostart
rc-update add jackett default
rc-service jackett start

# debugging
rc-service jackett status
cat /var/log/messages
cat /opt/JackettData/Jackett/log.txt