From 162c85b6c329583be645bd729351da1248f83278 Mon Sep 17 00:00:00 2001
From: Su Shi <1684739+metacpp@users.noreply.github.com>
Date: Fri, 12 Jan 2018 18:14:06 -0800
Subject: [PATCH] Introduced the version argument to dockerfile. (#43)

---
 .travis.yml | 2 +-
 Dockerfile  | 7 ++++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index f8e5bb5..09daf0b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,5 +20,5 @@ jobs:
     - stage: rake build
       install: true
       script:
-      - docker build -t ${IMAGE_NAME} .
+      - docker build --build-arg BUILD_TERRAFORM_VERSION=${TERRAFORM_VERSION} -t ${IMAGE_NAME} .
       - docker run ${IMAGE_NAME} rake build
diff --git a/Dockerfile b/Dockerfile
index 16981f0..f53cc97 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,10 @@
-FROM microsoft/terraform-test:0.11.1
+# Pull the base image with given version.
+ARG BUILD_TERRAFORM_VERSION="0.11.1"
+FROM microsoft/terraform-test:${BUILD_TERRAFORM_VERSION}
 
 ARG MODULE_NAME="terraform-azurerm-compute"
+
+# Declare default build configurations for terraform.
 ARG BUILD_ARM_SUBSCRIPTION_ID=""
 ARG BUILD_ARM_CLIENT_ID=""
 ARG BUILD_ARM_CLIENT_SECRET=""
@@ -8,6 +12,7 @@ ARG BUILD_ARM_TENANT_ID=""
 ARG BUILD_ARM_TEST_LOCATION="WestEurope"
 ARG BUILD_ARM_TEST_LOCATION_ALT="WestUS"
 
+# Set environment variables for terraform runtime.
 ENV ARM_SUBSCRIPTION_ID=${BUILD_ARM_SUBSCRIPTION_ID}
 ENV ARM_CLIENT_ID=${BUILD_ARM_CLIENT_ID}
 ENV ARM_CLIENT_SECRET=${BUILD_ARM_CLIENT_SECRET}