updated python

Moved to latest python as a base and changed the entrypoint to show the python version instead of the 
 non-existent java version.

Dockerfile

@@ -3,7 +3,7 @@
 # Environment: Java (glibc support)
 # Minimum Panel Version: 0.6.0
 # ----------------------------------
-FROM        python:3.6-alpine3.7
+FROM        python:3-alpine
 
 LABEL       author="Michael Parker" maintainer="docker@parkervcp.com"
 

entrypoint.sh

@@ -1,8 +1,8 @@
 #!/bin/ash
 cd /home/container
 
-# Output Current Java Version
-java -version
+# show python version
+python --version
 
 # Make internal Docker IP address available to processes.
 export INTERNAL_IP=`ip route get 1 | awk '{print $NF;exit}'`