use correct env var and fix bash nounset issue

.github/workflows/tests.yml

@@ -70,7 +70,7 @@ jobs:
       SPIFF_DATABASE_TYPE: ${{ matrix.database }}
       FORCE_COLOR: "1"
       PRE_COMMIT_COLOR: "always"
-      MYSQL_PASSWORD: password
+      DB_PASSWORD: password
       FLASK_SESSION_SECRET_KEY: super_secret_key
 
     steps:

bin/recreate_db

@@ -22,7 +22,7 @@ if [[ "${1:-}" == "clean" ]]; then
 
   # TODO: check to see if the db already exists and we can connect to it. also actually clean it up.
   # start postgres in background with one db
-  if [[ "$SPIFF_DATABASE_TYPE" == "postgres" ]]; then
+  if [[ "${SPIFF_DATABASE_TYPE:-}" == "postgres" ]]; then
     if ! docker exec -it postgres-spiff psql -U spiffworkflow_backend spiffworkflow_backend_testing -c "select 1"; then
       docker run --name postgres-spiff -p 5432:5432 -e POSTGRES_PASSWORD=spiffworkflow_backend -e POSTGRES_USER=spiffworkflow_backend -e POSTGRES_DB=spiffworkflow_backend_testing -d postgres