Update the droid build script

1. Support build droid image locally and publish end to end
2. Add script assisting login Azure Container Registry
3. Add a travis yaml prototype for building droid container.
4. Update the py36 dockerfile to derive from a stable base image
5. Update the version.sh to support timestamp as version.

scripts/ci/a01/Dockerfile.py36

@@ -1,4 +1,4 @@
-FROM troydai/azurecli-a01-droid:python3.6-0.8.0
+FROM troydai/azurecli-a01-droid:python3.6-stable
 
 COPY build /tmp/build
 

scripts/ci/a01/future.travis.yaml

@@ -0,0 +1,10 @@
+sudo: true
+dist: trusty
+jobs:
+  include:
+    - stage: build droid image
+      script:
+      - if [ -n $AZURE_CLI_BUILD_CR ]; then 
+          docker login $AZURE_CLI_BUILD_CR -u $AZURE_CLI_CR_SP_USENAME -p $AZURE_CLI_CR_SP_PASSWORD; 
+        fi
+      - ./scripts/ci/build_droid.sh

scripts/ci/build_droid.sh

@@ -4,18 +4,30 @@ set -e
 
 dp0=`cd $(dirname $0); pwd`
 
+# Clean up artifacts
+if [ -d artifacts ]; then rm -r artifacts; fi
+
 # Build the whl files first
 . $dp0/build.sh
 
 # Move dockerfile
 cp $dp0/a01/Dockerfile.py36 artifacts/
 
-image_name=azurecli-test:python3.6-$version
+# for travis repo slug, remove the suffix to reveal the owner
+# - the offical repo will generate image: azurecli-test-Azure
+# - the fork repo will generate image: azurecli-test-johnongithub
+# for local private build uses local user name.
+# - eg. azurecli-test-private-john
+image_owner=${TRAVIS_REPO_SLUG%/azure-cli} 
+image_owner=${image_owner:="private-${USER}"}
+
+image_name=azurecli-test-$image_owner:python3.6-$version
+
 docker build -t $image_name -f artifacts/Dockerfile.py36 artifacts
 
-if [ $A01_ACR ]; then
-    az acr login -n $A01_ACR
-    docker tag $image_name $A01_ACR.azurecr.io/$image_name
-    docker push $A01_ACR.azurecr.io/$image_name
+if [ $AZURE_CLI_BUILD_CR ]; then
+    if [ -z $TRAVIS ]; then $dp0/login_cr.sh; fi
+    docker tag $image_name $AZURE_CLI_BUILD_CR/$image_name
+    docker push $AZURE_CLI_BUILD_CR/$image_name
 fi
 

scripts/ci/login_cr.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+# Login a container registry before build test droid
+#
+# This command assume you have az on the path and have login the subscription 
+# containing the Azure Container Registry.
+#
+
+acr_name=${AZURE_CLI_BUILD_CR%%'.azurecr.io'}
+az acr login -n $acr_name
+

scripts/ci/version.sh

@@ -12,8 +12,8 @@ if [ -z $version ]; then
 fi
 
 if [ -z $version ]; then
-    echo 'Missing version string'
-    exit 1
+    echo 'Use utc timestamp as version'
+    version=`date -u '+%Y%m%d%H%M%S'`
 fi
 
 echo "Replace with version: $version"