Run container using CLI arguments instead of environment variables

[iamareebjamal]

Currently, the container is started using an environment variable to decide if server or celery instance will be run. It makes it difficult to modify the image for quick edits when running.

open-event-server/scripts/container_start.sh

Lines 2 to 9 in b3a8c33

	export DEPLOYMENT=${DEPLOYMENT:-api}
	echo "[LOG] Deploying ${DEPLOYMENT}"
	echo "[LOG] Using database: ${DATABASE_URL}"
	echo "[LOG] Using redis: ${REDIS_URL}"
	if [ "$DEPLOYMENT" == "api" ]
	then

open-event-server/scripts/container_start.sh

Lines 21 to 23 in b3a8c33

	if [ "$DEPLOYMENT" == "celery" ]
	then
	echo "[LOG] Starting celery worker"

Instead it should be run via CLI arguments. Like

./container_start.sh run api or ./container_start.sh run celery

[codedsun]

taking this up