Switch to sqlite (#22)

* Updated project to use sqlite

* Edited migrations directly because I fear no man

* Updated search functions and tests to work with sqlite

* Updated build tools to remove postgres

docker-run.sh

@@ -10,15 +10,6 @@ echo "\nInstalling JS..."
 cd assets && yarn install
 cd ..
 
-# Wait for Postgres to become available.
-export PGPASSWORD=$(echo $POSTGRES_PASSWORD)
-until psql -h postgres -U $POSTGRES_USER -c '\q' 2>/dev/null; do
-  echo >&2 "Postgres is unavailable - sleeping"
-  sleep 1
-done
-
-echo "\nPostgres is available: continuing with database setup..."
-
 # Potentially Set up the database
 mix ecto.create
 mix ecto.migrate