Reverted changes to the Dockerfile, fix to env is done by the dc

Student User

2019-08-08 27de9efbe220c3e9b48e04014b11eeb4484f28ce

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#!/bin/bash
 
echo '--- Host name:'
cat /proc/sys/kernel/hostname
echo
echo '--- Free memory'
grep '^Mem' /proc/meminfo
echo
echo '--- Mounted file systems (partial)'
df -h