some hints which helped me:

docker-compose.yml, some ports

version: '2'

services:
iobroker:
restart: always
image: buanet/iobroker:latest
container_name: iobroker
hostname: iobroker
ports:
- "8081:8081"
- "1880:1880" #node-red
- "1883:1883" #mqtt
- "2001:2001" #homematic
- "2010:2010" #homematic
- "8082:8082" #iobroker admin
- "8282:8282" #flot
- "8088:8088" #terminal
- "8284:8284" #socketIO
- "33980:33980" #Alexa
- "37325:37325" #Alexa
volumes:
- ./iobrokerdata:/opt/iobroker

Adapter alexa 2.0

Externer Container: IP docker container
Proxy-Port choose at free will and add it to the docker ports

Grafana

to use grafana with docker-compose and to share a panel in vis in ioBroker I used this in docker-compose.yml:

grafana:
image: grafana/grafana:latest
container_name: grafana
restart: unless-stopped
ports:
- "3000:3000"
- "3306:3306"
volumes:
- ./grafanadata:/grafana
- /var/lib/grafana:/var/lib/grafana
environment:
- GF_AUTH_ANONYMOUS_ENABLED=true
- GF_SECURITY_ALLOW_EMBEDDING=true

create table .....(
   ....
 FOREIGN KEY (
        reg,
        ver
    )
    REFERENCES table2(reg,
    ver) 
);

Als meinen ersten Homematic Beitrag verlinke ich hier das Video, wie es gelingt einen Fensterkontakt zu reseten (habe ich lange gesucht/probiert).

Batterie raus. Knopf gedrückt halten, während dessen Batterie rein. Nach 4 sec loslassen und nochmals 4 sec drücken. Bei grün loslassen. Haben aber trotz Video mehrere Anläufe gebraucht(?).

PlantUML is also able to generate Gantt. You can test it at: https://www.planttext.com

Above are all available elements I found in PlantUML to build gantts.

@startgantt
Project starts the 5th of august 2019
saturday are closed
sunday are closed
2019/08/15 is closed
[Prototype designx] as [TASK1] lasts 6 days
[TASK1] is colored in Lavender/LightBlue
[Prototype design] lasts 13 days
[Prototype completed] happens at [Prototype design]'s end
[Test prototype] lasts 14 days
[Test prototype] starts at [Prototype design]'s end
[Prototype design] is colored in Fuchsia/FireBrick
[Test prototype] is colored in GreenYellow/FF0000
[Ein Vorgang] starts at [Prototype designx]'s end
[Ein Vorgang] lasts 5 days
[Ein Vorgang2] starts at 15th of august 2019
[Ein Vorgang2] lasts 7 days
[Ein Vorgang3] starts at [Ein Vorgang2]'s end
[Ein Vorgang3] lasts 5 days
[Ein Vorgang4] lasts 9 days
[Ein Vorgang5] lasts 6 days
[Ein Vorgang4] starts at 2019/08/17
[Ein Vorgang5] starts 5 days after [Ein Vorgang2]'s start
[Task1] on {Alice} lasts 10 days
[Task2] on {Bob:50%} lasts 2 days
then [Task3] on {Alice:25%} lasts 1 days
@endgantt

Habe überlegt wie man solch eine Rampe am besten selber bauen kann. Was so angeboten wird ist ziemlich teuer.

Die Lösung war neben dem Brett mit der Höhe der Türschwelle, ein Elektrohobel. Dann frei Hand, einen sanften Aufstieg modellieren. Und … siehe Video

Christian, a colleague createted a very nice project with an arduino and an e-ink display:
https://www.brokoko.eu/kitchen-clock-with-public-transport-schedule/