Squashed commit of the following:

commit 9f3f2b5cfb8dc6f85e41a6f67f8c48ed290c3bc3
Author: Viktor Roytman <vr2262@columbia.edu>
Date:   Tue Dec 6 13:37:26 2016 -0500

    Update version to 0.0.5

commit 339ae3fa68e62de06f163f88f3771fba3c405b69
Author: Viktor Roytman <vr2262@columbia.edu>
Date:   Tue Dec 6 13:36:50 2016 -0500

    Update cron command

Author: vr2262

prod/docker-compose.yml

@@ -1,7 +1,7 @@
 version: '2'
 services:
   minigrid:
-    image: selcolumbia/minigrid-server:0.0.4
+    image: selcolumbia/minigrid-server:0.0.5
     command: ./prod/run.sh --db_host=db --redis_url=redis://redis:6379/0 --minigrid-website-url=https://www.example.com
     depends_on:
       - redis

prod/install.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# Minigrid Server installer for version 0.0.4
+# Minigrid Server installer for version 0.0.5
 set -e
 
 # Do you have docker installed?
@@ -108,8 +108,8 @@ $SUDO openssl dhparam -out /etc/letsencrypt/live/$LETSENCRYPT_DIR/dhparam.pem 20
 printf "========================================\n"
 printf " Downloading configuration files        \n"
 printf "========================================\n"
-$CURL -L https://raw.githubusercontent.com/SEL-Columbia/minigrid-server/0.0.4/prod/docker-compose.yml > docker-compose.yml
-$CURL -L https://raw.githubusercontent.com/SEL-Columbia/minigrid-server/0.0.4/prod/nginx.conf > nginx.conf
+$CURL -L https://raw.githubusercontent.com/SEL-Columbia/minigrid-server/0.0.5/prod/docker-compose.yml > docker-compose.yml
+$CURL -L https://raw.githubusercontent.com/SEL-Columbia/minigrid-server/0.0.5/prod/nginx.conf > nginx.conf
 
 sed -i s/www.example.com/$LETSENCRYPT_DIR/g docker-compose.yml
 sed -i s/www.example.com/$LETSENCRYPT_DIR/g nginx.conf
@@ -146,6 +146,6 @@ CRON_CMD="mkdir -p /tmp/letsencrypt && "\
 "if [ -f /tmp/renewed ] ; then docker restart $NGINX_CONTAINER_NAME ; fi ; "\
 "rm -f /tmp/renewed"
 # https://certbot.eff.org/#ubuntuxenial-nginx recommends running this twice a day on random minute within the hour
-CRON_JOB="00 01,13 * * * sleep $(expr $RANDOM \% 59); $CRON_CMD"
+CRON_JOB="00 01,13 * * * sleep \$(expr \$RANDOM \% 59); $CRON_CMD"
 crontab -l | fgrep -i -v "$CRON_CMD" | { cat; echo "$CRON_JOB"; } | crontab -
 crontab -l