Added legacy scanner for Azure pipelines

azure-pipelines/old-scan-engine/README.md

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+# Azure Pipelines Demo
+
+In this demo we will use Azure Pipelines to build, scan and push a container image.
+
+NOTE: This example uses the [legacy Sysdig scanning engine](https://docs.sysdig.com/en/docs/sysdig-secure/scanning/)
+
+The workflow is as follows:
+
+1. Build the container image and store it locally
+2. Run the `sysdiglabs/secure-inline-scan:2` container to perform the scan
+3. Push the container image to a remote registry
+
+## Setup
+
+### Variables
+
+It is required to create a `secureApiKey` pipeline variable containing the Sysdig API token in order
+to be able to perform the scan. See [the official documentation](https://docs.microsoft.com/en-us/azure/devops/pipelines/process/set-secret-variables)
+for instructions on how to do it, but basically:
+
+* Edit the pipeline
+* Select "Variables"
+* Add a new `secureApiKey` variable with the proper content
+
+### Registry access
+
+It is required to create a Docker registry "Service Connections" to be able to push images to the registry.
+See [the official documentation](https://docs.microsoft.com/en-us/azure/devops/pipelines/library/service-endpoints?view=azure-devops&tabs=yaml#docker-hub-or-others)
+for instructions on how to do it, but basically:
+
+* Select Project settings > Service connections
+* Select + New service connection, select the "Docker Registry", and then select Next
+* Add the registry url, user & password and a Service connection name (in this example, the Service connection name is `containerRegistry`)
+
+Then, modify the variables on the [azure-pipelines.yml](azure-pipelines.yml) file to fit your needs:
+
+```
+containerRegistryConnection: containerRegistry
+imageName: "sysdiglabs/dummy-vuln-app"
+tags: "latest"
+```

azure-pipelines/old-scan-engine/azure-pipelines.yml

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+pool:
+  vmImage: 'ubuntu-16.04'
+
+variables:
+  containerRegistryConnection: containerRegistry
+  imageName: 'sysdiglabs/dummy-vuln-app'
+  tags: |
+    latest
+
+steps:
+- task: Docker@2
+  displayName: Build image
+  inputs:
+    repository: $(imageName)
+    command: build
+    tags: $(tags)
+
+- bash: docker run --rm \
+    -v /var/run/docker.sock:/var/run/docker.sock \
+    quay.io/sysdig/secure-inline-scan:2 \
+    --sysdig-token $(secureApiKey) \
+    --storage-type docker-daemon \
+    --storage-path /var/run/docker.sock \
+    $(imageName):latest
+
+- task: Docker@2
+  inputs:
+    command: 'login'
+    containerRegistry: $(containerRegistryConnection)
+
+- task: Docker@2
+  inputs:
+    command: 'push'
+    tags: $(tags)
+    containerRegistry: $(containerRegistryConnection)