diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fcf3b18..0d45dc2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,24 @@ on:
     branches: [ main ]
 
 jobs:
+
+  - name: Login to GitHub Container Registry
+    uses: docker/login-action@v2 
+    with:
+      registry: ghcr.io
+      username: ${{ github.repository_owner }}
+      password: ${{ secrets.GITHUB_TOKEN }}
+
+  - name: Build and run Dev Container task
+    uses: devcontainers/ci@v0.3
+    with:
+      # Change this to point to your image name
+      imageName: ghcr.io/gresearch/astral-devcontainer
+      # Change this to be your CI task/script
+      runCmd: |
+        # Add multiple commands to run if needed
+        bundle install
+  
   scan_ruby:
     runs-on: ubuntu-latest
 
@@ -16,6 +34,7 @@ jobs:
       - name: Run brakeman
         uses: devcontainers/ci@v0.3
         with:
+          imageName: ghcr.io/gresearch/astral-devcontainer
           runCmd: bin/brakeman --no-pager
 
   lint:
@@ -49,6 +68,7 @@ jobs:
       - name: Run tests
         uses: devcontainers/ci@v0.3
         with:
+          imageName: ghcr.io/gresearch/astral-devcontainer
           runCmd: bin/rails test
 
       - name: Keep screenshots from failed system tests
diff --git a/README.md b/README.md
index a28d48c..85318bf 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # README
 
-Astral-rails is a proof-of-concept api application intended to simplify
+Astral is an api-only application intended to simplify
 certificate acquisition for other applications/services. Broadly speaking,
 it will: 
 
@@ -10,16 +10,20 @@ it will:
 
 # Running
 
-This app is most easily run and developed in its devcontainer.
+This Rails app is most easily run and developed in its devcontainer.
 
 1) Open in devcontainer
 2) Launch server using vscode launch config, or in terminal run:
 ```
 rails s
 ```
-3) POST /certificates to acquire cert in terminal:
+3) POST /certificates to acquire cert in another terminal (need to provide `common_name` param):
 ```
 curl -X POST http://localhost:3000/certificates \
--H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJhcHBsaWNhdGlvbl9uYW1lIiwiY29tbW9uX25hbWUiOiJleGFtcGxlLmNvbSIsImlwX3NhbnMiOiIxMC4wLjEuMTAwIn0.61e0oQIj7vwGtOpFuPJDCI_Bqf8ZTpJxe_2kUwcbN7Y"
+-H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJhcHBsaWNhdGlvbl9uYW1lIiwiY29tbW9uX25hbWUiOiJleGFtcGxlLmNvbSIsImlwX3NhbnMiOiIxMC4wLjEuMTAwIn0.61e0oQIj7vwGtOpFuPJDCI_Bqf8ZTpJxe_2kUwcbN7Y" \
+-H "Content-type: application/json" -d '{ "common_name": "example.com" }'
+```
+4) Run the tests from devcontainer terminal:
+```
+rails test
 ```
-