Added docker login step

.drone.yml

@@ -7,7 +7,7 @@ clone:
   disable: true
 
 steps:
-  - name: manual-clone
+  - name: clone
     image: alpine/git
     commands:
       - git clone https://gitea.khongisa.co.za/MngomaLab/webapitest.git .
@@ -18,6 +18,17 @@ steps:
     commands:
       - dotnet publish --configuration Release
       - ls ./SampleApi/bin/Release/net8.0/publish/
+  
+  - name: docker login
+    image: docker:20.10
+    environment:
+      DOCKER_USERNAME:
+        from_secret: docker_username
+      DOCKER_PASSWORD:
+        from_secret: docker_password
+    commands:
+      - echo $DOCKER_PASSWORD | docker login -u $DOCKER_USERNAME --password-stdin
+      - docker info | grep "Registry"
 
   - name: docker build and push
     image: plugins/docker
@@ -30,6 +41,7 @@ steps:
         from_secret: docker_password
       dockerfile: Dockerfile
       context: .
+      force_tag: true
       tags:
         - latest
         - ${DRONE_BUILD_NUMBER}