Adding Dagster-related code

.gitignore

@@ -3,6 +3,7 @@ dbtlearn/package-lock.yml
 dbtlearn/target/
 dbtlearn/dbt_packages/
 archive
+dbt_dagster_project
 
 logs/
 venv/

DAGSTER.md

@@ -1,10 +1,26 @@
-# Installation
+# Orchestrating dbt with Dagster
+
+## Set up your environment
+Let's create a virtualenv and install dbt and dagster. These packages are located in [requirements.txt](requirements.txt).
+```
+virutalenv venv -p python3.11
+pip install -r requirements.txt
+```
+
+## Create a dagster project
+Dagster has a command for creating a dagster project from an existing dbt project: 
 ```
 dagster-dbt project scaffold --project-name dbt_dagster_project --dbt-project-dir=dbtlearn
 ```
 
-# Start dev server
+_At this point in the course, open [schedules.py](dbt_dagster_project/dbt_dagster_project/schedules.py) and uncomment the schedule logic._
+
+# Start dagster
+Now that our project is created, start the Dagster server:
+
 ```
 cd dbt_dagster_project
 DAGSTER_DBT_PARSE_PROJECT_ON_LOAD=1 dagster dev
 ```
+
+We will continue our work on the dagster UI at [http://localhost:3000/](http://localhost:3000) 

requirements.txt

@@ -1,9 +1,3 @@
-dagster==1.5.9
-dagster-dbt==0.21.9
-dagster-graphql==1.5.9
-dagster-pipes==1.5.9
-dagster-webserver==1.5.9
-dbt-core==1.7.2
-dbt-extractor==0.5.0
-dbt-semantic-interfaces==0.4.1
-dbt-snowflake==1.7.0
+dbt-snowflake==1.7.1
+dagster-dbt==0.22.0
+dagster-webserver==1.6.0