replaced /etc/environment with /etc/cron-env.sh to work with cron

docker/Crontab

@@ -1,2 +1,5 @@
-0 8 * * * root /opt/app/run-task.sh --today
-*/15 * * * * root /opt/app/run-task.sh
+SHELL=/bin/bash
+MAILTO=""
+0 8 * * * root . /etc/cron-env.sh && /opt/app/run-task.sh --today >> /proc/1/fd/1 2>&1
+*/15 * * * * root . /etc/cron-env.sh && /opt/app/run-task.sh >> /proc/1/fd/1 2>&1
+* * * * * root echo "cron test ran at $(date)" >> /proc/1/fd/1 2>&1