Optimizing drone compiling

.drone.yml

@@ -3,25 +3,25 @@ type: docker
 name: default
 
 steps:
-  - name: build-dotnet
-    image: alpine
-    commands:
-      - echo "Docker build will handle dotnet publish"
+- name: build-docker
+  image: plugins/docker
+  settings:
+    registry: 192.168.1.9:3000
+    repo: 192.168.1.9:3000/tai/aberwyn/aberwyn
+    username:
+      from_secret: gitea_username
+    password:
+      from_secret: gitea_token
+    dockerfile: Aberwyn/Dockerfile
+    context: .
+    tags:
+      - latest
+      - ${DRONE_COMMIT_SHA:0:7}
+    cache_from:
+      - 192.168.1.9:3000/tai/aberwyn/aberwyn:latest
+    insecure: true
+
 
-  - name: build-docker
-    image: plugins/docker
-    settings:
-      registry: 192.168.1.9:3000
-      repo: 192.168.1.9:3000/tai/aberwyn/aberwyn
-      username:
-        from_secret: gitea_username
-      password:
-        from_secret: gitea_token
-      dockerfile: Aberwyn/Dockerfile
-      context: .
-      tags:
-        - latest
-      insecure: true
 
   - name: restart-unraid-container
     image: appleboy/drone-ssh