diff --git a/.tangled/workflows/build.yml b/.tangled/workflows/build.yml
index 7cb8b81..9da94f6 100644
--- a/.tangled/workflows/build.yml
+++ b/.tangled/workflows/build.yml
@@ -10,6 +10,9 @@ dependencies:
   nixpkgs:
     - nodejs
 
+virtualization:
+  docker: true
+
 # cache:
 #   - key: node_modules
 #     hash:
@@ -27,11 +30,13 @@ steps:
       npm run format:check
       npm test
 
-  - name: Docker Login
-    command: echo 'TODO'
+  - name: Docker Build & Push
+    command: |
+      set -euo pipefail
 
-  - name: Docker Build
-    command: echo 'TODO'
+      echo "$REGISTRY_TOKEN" | docker login atcr.io -u "$REGISTRY_USER" --password-stdin
+      image="atcr.io/$REGISTRY_USER/v2-api:$TANGLED_REF_NAME"
 
-  - name: Docker Push
-    command: echo 'TODO'
+      docker build -t "$image" -t "atcr.io/$REGISTRY_USER/v2-api:latest" .
+      docker push "$image"
+      docker push "atcr.io/$REGISTRY_USER/v2-api:latest"