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Docker/DockerHub.MD

@@ -1,4 +1,5 @@
 ## What is Docker Hub Registry
+## edited for triggering job
 
 Docker Hub is a cloud-based registry service which allows you to link to code repositories, build your images and test them, stores manually pushed images, and links to Docker Cloud so you can deploy images to your hosts. It provides a centralized resource for container image discovery, distribution and change management, user and team collaboration, and workflow automation throughout the development pipeline.
 

Docker/Docker_Commands.MD

@@ -1,4 +1,4 @@
-
+editing code for pipeline triggers
 1. how to search a docker image in hub.docker.com
 ```sh
 docker search httpd

azure-pipelines.yml

@@ -0,0 +1,20 @@
+# Starter pipeline
+# Start with a minimal pipeline that you can customize to build and deploy your code.
+# Add steps that build, run tests, deploy, and more:
+# https://aka.ms/yaml
+
+trigger:
+- master
+- develop
+
+pool:
+  vmImage: ubuntu-latest
+
+steps:
+- script: echo Hello, world!
+  displayName: 'Run a one-line script'
+
+- script: |
+    echo Add other tasks to build, test, and deploy your project.
+    echo See https://aka.ms/yaml
+  displayName: 'Run a multi-line script'