Initial commit

.github/steps/2-add-a-dockerfile.md

@@ -0,0 +1,21 @@
+<!--
+  <<< Author notes: Step 2 >>>
+  Start this step by acknowledging the previous step.
+  Define terms and link to docs.github.com.
+-->
+
+## Step 2: Add a Dockerfile
+
+_You created a publishing workflow! :tada:_
+
+We will add a `Dockerfile` to the `cd` branch. The `Dockerfile` contains a set of instructions that get stored in a `Docker Image`. If you'd like, you can [learn more about Dockerfiles](https://docs.docker.com/engine/reference/builder/).
+
+### :keyboard: Activity: Add a Dockerfile
+
+1. In the `cd` branch, create `Dockerfile` at the project root and include:
+   ```dockerfile
+   FROM nginx:1.24-alpine
+   COPY . /usr/share/nginx/html
+   ```
+1. Commit your changes.
+1. Wait about 20 seconds then refresh this page (the one you're following instructions from). [GitHub Actions](https://docs.github.com/en/actions) will automatically update to the next step.