VERSION: upgrading to Java 8u202b08, use signing key for glibc packages

VERSION: upgrading to Java 8u201b09, glibc 2.29-r0

VERSION: upgrading to 8u192b12

VERSION: upgrading to 8u191b12

README.md update, to trigger rebuild per #73

VERSION: upgrade 8/current to 8u172b11 (#67)

adding HotSwapAgent to DCEVM image

Adding Java tarball SHA256 verification

VERSION: 8/current to 8u151b12, alpine 3.6, glibc 2.6

VERSION: upgrading 8/current to 8u144b01