[readme] explicitly mention that the full GPG fingerprint is required
[flink-docker.git] / 1.12 /
drwxr-xr-x   ..
drwxr-xr-x - scala_2.11-java11-debian
drwxr-xr-x - scala_2.11-java8-debian
drwxr-xr-x - scala_2.12-java11-debian
drwxr-xr-x - scala_2.12-java8-debian