--docker-build flag seems to have no effect with Gradle plugin

[vsodaitis]

Since 0.15.0 version, when buildNative gradle task is invoked it asks for GRAALVM_HOME environment variable regardless of whether it is being run with --docker-build=true or --docker-build=false

Expected behavior
I would expect the build to not require GRAALVM_HOME set when using docker image as a build environment

Environment (please complete the following information):

• Output of uname -a or ver: Linux localhost.localdomain 5.1.7-300.fc30.x86_64 Switch to the Maven distributed copy of the SubstrateVM annotations #1 SMP Wed Jun 5 12:32:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
• Output of java -version: openjdk version "1.8.0_212"
• GraalVM version (if different from Java): graalvm-ce-1.0.0-rc16
• Quarkus version or git rev: 0.16.1

[gwenneg]

Hi @vsodaitis and thanks for reporting this issue!

I'm really sorry you had to wait so long for an answer, but this should be fixed in Quarkus 0.21.0.