Windows: CrateDB fails to start on Docker for Windows with `-Cdiscovery.type=single-node`

_@michaelkremmel reported this the other day. Thank you._

## Problem

After executing the command `docker run --name=cratedb --rm -it --network=cratedb-demo --publish=4200:4200 --publish=5432:5432 --env=CRATE_HEAP_SIZE=2g docker.io/crate -Cdiscovery.type=single-node` I got the following warning and it was not clear to me what it means or if it could affect anything I tried to achieve with the tutorial.

```java
WARNING: Using incubator modules: jdk.incubator.vector
Exception in thread "main" java.lang.NullPointerException: Cannot invoke "String.isEmpty()" because "kvp.value" is null
at io.crate.server.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:67)
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:120)
at org.elasticsearch.cli.Command.main(Command.java:86)
at io.crate.bootstrap.CrateDB.main(CrateDB.java:68)
```

## Workaround

Turned out that the CrateDB container run only for a few seconds and stopped. After some trial and error I just removed `-Cdiscovery.type=single-node` which made it work, however I'm not sure what implications that has, so please don't consider it as a fix, but just as a workaround from my side and if possible find out what is causing the issue.