Remove db:migrate and exec "$@" from production entrypoint.

Currently, db:migrate fails in production because migrations were defined in SQLite instead of MySQL.
This matters since the two handle references differently (MySQL uses bigints), so some migrations
involving them fail.

Author: jmmclaug201

docker/production/entrypoint.sh

@@ -6,9 +6,11 @@ set -e
 rm -f ./tmp/pids/server.pid
 
 # Make sure db is ready to go
-# Adding '2>/dev/null' sends output to nowhere in the case of an error and the
-# error code also triggers the bash OR to run db:setup
-bundle exec rails db:migrate
+# TODO: uncomment once we migrate development DB to MySQL
+# This line fails because of differences between SQLite (where migrations were created)
+# and production MySQL 
+# bundle exec rails db:migrate
 
 # Then exec the container's main process (CMD in the Dockerfile).
-exec "$@"
+# TODO: Uncomment once we migrate development DB to MySQL
+# exec "$@"