Docker install on Synology : how to create use with no home and no shell

Setup, Configuration and Use Installation
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23

Here is a summary how I’ve got my EnOcean USB310 stick to run on my Synology/Docker setup:

First I had to create a start up script for my Synology to load some additional modules, as described here:

sudo vi /usr/local/etc/rc.d/startup.sh

The content is:

sudo insmod /lib/modules/usbserial.ko
sudo insmod /lib/modules/ftdi_sio.ko
sudo chmod 777 /lib/modules/usbserial.ko
sudo chmod 777 /lib/modules/ftdi_sio.ko

Change rights of startup.sh:

chmod 700 /usr/local/etc/rc.d/startup.sh

Next I had to add an additional rule, for renaming the tty device and for setting the required privileges as described here. First I though I could skip this step. But setting the right privileges was necessary because the rights of the host system got passed over to the container.

I created

/lib/udev/rules.d/55-usb-enocean.rules

with the following content:

SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", SYMLINK+="usbEnocean", MODE="0666"

The USB vendor and product ID I found with lsusb:

|__usb1          1d6b:0002:0404 09  2.00  480MBit/s 0mA 1IF  (Linux 4.4.59+ xhci-hcd xHCI Host Controller 0000:00:15.0) hub
  |__1-2         0403:6001:0600 00  2.00   12MBit/s 90mA 1IF  (FTDI FT232R USB UART AL05792Y)

Than I had to modify my docker-compose.yml :

[...]
EXTRA_JAVA_OPTS: "[...] -Dgnu.io.rxtx.SerialPorts=/dev/usbEnocean"
[...]
devices: 
      - "/dev/usbEnocean:/dev/usbEnocean"

Finally I had to set the path property of the EnOcean Gateway thing.

/dev/usbEnocean