Push to quay.io: Update and fix README.md

Signed-off-by: Sebastian Schildt <sebastian.schildt@de.bosch.com>

README.md

@@ -1,4 +1,5 @@
 # KUKSA GPS Provider
+
 ![kuksa.val Logo](./doc/img/logo.png)
 
 The KUKSA GPS Provider consumes [gpsd](https://gpsd.gitlab.io/gpsd/) as datasource and pushes location to
@@ -9,20 +10,20 @@ The [`gpsd_feeder.ini`](./config/gpsd_feeder.ini) contains configuration for  co
 
 Before starting the KUKSA GPS Provider, you need to start the KUKSA Databroker or KUKSA Server. You have to start an instance of `gpsd` by running:
 
-```
+```console
 gpsd -S <gpsd port> -N <gps device>
 ```
 
 If you do not have a gps device, you can use your cellphone to forward gps data to `gpsd`. For example [gpsd-forward](https://github.com/tiagoshibata/Android-GPSd-Forwarder) is an open source android app.
 You can start gpsd with the following command to receive data from the app:
 
-```
+```console
 gpsd -N udp://0.0.0.0:29998
 ```
 
 ## Install dependencies and execution
 
-```
+```console
 usage: gpsd_feeder.py [-h] [--ip [IP]] [--port [PORT]] [--protocol [PROTOCOL]] [--insecure [INSECURE]] [--cacertificate [CACERTIFICATE]] [--tls-server-name [TLS_SERVER_NAME]] [--token [TOKEN]]
                       [--file [FILE]] [--gpsd_host [GPSD_HOST]] [--gpsd_port [GPSD_PORT]] [--interval [INTERVAL]]
 
@@ -52,7 +53,7 @@ A template config file that can be used together with the `--file` option
 exists in [config/gpsd_feeder.ini](config/gpsd_feeder.ini). Note that if `--file` is specified all other options
 are ignored, instead the values in the config file or default values specified by kuksa-client will be used.
 
-```
+```console
 pip install -r requirements.txt
 python gpsd_feeder.py
 ```
@@ -64,7 +65,7 @@ Note that the KUKSA Databroker by default does not require authentication.
 
 An example for authorizing against KUKSA Databroker using an example token is shown below.
 
-```
+```console
 python gpsd_feeder.py --protocol grpc --port 55555 --insecure true --token /home/user/kuksa.val/jwt/provide-all.token
 ```
 
@@ -77,7 +78,7 @@ If addressing with a numeric IP-address and using grpc as protocol the "real" se
 `--tls-server-name`. For the [KUKSA example certificates](https://github.com/eclipse-kuksa/kuksa-common/tree/main/tls)
 the names `localhost`and `Server`can be used.
 
-```
+```console
 python gpsd_feeder.py --port 55555 --protocol grpc --ip 127.0.0.1 --cacertificate ~/kuksa-common/tls/CA.pem --tls-server-name Server
 ```
 
@@ -86,16 +87,26 @@ python gpsd_feeder.py --port 55555 --protocol grpc --ip 127.0.0.1 --cacertificat
 You can also use `docker` to execute the feeder platform independently.
 To build a docker image:
 
-```
+```console
 docker build -t gps-provider .
 ```
 
+To run:
 
-You can also download docker images from [our container registry](https://github.com/eclipse/kuksa.val.feeders/pkgs/container/kuksa-gps-provider%2Fgps-provider).
+```console
+docker run -it -p 29998:29998/udp -v $PWD/config:/config gps-provider
+```
 
-To run:
+You can also download pre-built docker images:
+
+```console
+docker run -it -p 29998:29998/udp -v $PWD/config:/config ghcr.io/eclipse-kuksa/kuksa-gps-provider/gps-provider:main
 ```
-docker run -it -p 29998:29998/udp -v $PWD/config:/config gps-provider
+
+If the ghcr registry is not easily accessible to you, e.g. if you are a China mainland user,  we also made the container images available at quay.io:
+
+```console
+docker run -it -p 29998:29998/udp -v $PWD/config:/config quay.io/eclipse-kuksa/gps-provider:main
 ```
 
 The container contains an internal gpsd daemon and the exposed UDP port can be used to feed NMEA data e.g. with [gpsd-forward](https://github.com/tiagoshibata/Android-GPSd-Forwarder) from an Android phone.
@@ -109,21 +120,22 @@ You can also use [gpsfake](https://gpsd.gitlab.io/gpsd/gpsfake.html) to playback
 To install `gpsfake`, follow the command in this [link](https://command-not-found.com/gpsfake).
 After installation, run the following command to simulate a gps device as datasource:
 
-```
+```console
 gpsfake -P 2947 simplelog_example.nmea
 ```
 
 Note: You need to use the `gpsfake` with the same version like the installed `gpsd`.
 
 There are several tools for generating nmea log files:
+
 - [nmea-gps logger](https://www.npmjs.com/package/nmea-gps-logger)
 - [nmeagen](https://nmeagen.org/)
 
 ### gpsfake troubleshouting
 
 If you see a gpsfake error message similar to this one after the feeder connected:
 
-```
+```console
 gpsfake: log cycle of simplelog_example.nmea begins.
 gpsd:ERROR: SER: device open of /dev/pts/8 failed: Permission denied - retrying read-only
 gpsd:ERROR: SER: read-only device open of /dev/pts/8 failed: Permission denied
@@ -134,7 +146,7 @@ This might be due to a an overly restrictive apparmor configuration. On Ubuntu e
 
 search for a section looking like this
 
-```
+```console
   # common serial paths to GPS devices
   /dev/tty{,S,USB,AMA,ACM}[0-9]*    rw,
   /sys/dev/char     r,
@@ -143,18 +155,17 @@ search for a section looking like this
 
 And add a line for pts device so that it looks like
 
-```
+```console
   # common serial paths to GPS devices
   /dev/tty{,S,USB,AMA,ACM}[0-9]*    rw,
   /dev/pts/[0-9]*    rw,
   /sys/dev/char     r,
   /sys/dev/char/**  r,
 ```
 
-
 Restart apparmor
 
-```
+```console
 sudo systemctl restart apparmor
 ```