jdk latest (13->14), unzip, + delete default krb5.conf

install both java-13 and java-8

fix python->python3 alternative

install which and create python alternative link

Switch to use centos. Bye-bye java/rocksdb segfaults.

Fixing some typos in README.md (#1)

use alpine and install python3 + robot by default

bumping launcher version

fix travis file

swich to shell based build script with docker label support

add label with the current launcher version

disable caching

force to create new image with the latest launcher

move launcher script to external repositories

git ignore .class files