diff --git a/README.md b/README.md
index 61ee057..97b15cc 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,20 @@
 # gtfs-dagster
 
-Dagster setup that scrapes GTFS and GTFS-RT for specified transit agencies and adds them to a DuckDB
\ No newline at end of file
+Dagster setup that scrapes GTFS and GTFS-RT for specified transit agencies and adds them to a DuckDB
+
+## Input
+This reads from the `data/gtfs/agency_list.csv` file, edit this file to include the transit agencies that you want to scrape, add the relevant IDs from mobilitydatabase.org
+
+## set to your environment
+### Data directory
+edit dagster.yaml to specify the correct data directory under run_launcher.
+
+Right now it says: `/home/ben/code/gtfs-dagster/data:/opt/dagster/app/data`, change the first part to where you want the data to be stored.
+
+### .env file
+copy `env.sample` to `.env` and change the password
+
+# Run it
+`docker compose build`
+`docker compose up -d`
+access the Dagster web ui at 127.0.0.1:3001
diff --git a/env.sample b/env.sample
new file mode 100644
index 0000000..f06225f
--- /dev/null
+++ b/env.sample
@@ -0,0 +1,3 @@
+POSTGRES_USER=dagster
+POSTGRES_PASSWORD=change-me
+POSTGRES_DB=dagster