ENH: Add Relevant BUILDNAME for CDash submission

This commit enables continuous integration testing with docker to
submit results on the dashboard with a more relevant build name.
This build name corresponds to the docker image tag that was previously
set up in PR #49 to specify the build option used by the image.
The image tag is extracted from the name of the Docker directory that
contains the Dockerfile. This directory must be named according to this
convention : Docker-$DOCKER_TAG.
To provide a relevant build name to the image, $DOCKER_TAG has to be set
as an environment variable in the circle.yml file where it is passed as
an argument when running the test.sh script.

Author: LucasGandel

circle.yml

@@ -1,14 +1,16 @@
 machine:
   services:
     - docker
+  environment:
+    DOCKER_TAG_1: itk-v4.8.0_use_system_libraries-off
 
 dependencies:
   override:
     - docker info
-    - docker pull slicer/slicerexecutionmodel:itk-v4.8.0_use_system_libraries-off
+    - docker pull slicer/slicerexecutionmodel:$DOCKER_TAG_1
 
 test:
   override:
     - mkdir ~/SlicerExecutionModel-build
-    - docker run -v ~/SlicerExecutionModel:/usr/src/SlicerExecutionModel -v ~/SlicerExecutionModel-build:/usr/src/SlicerExecutionModel-build slicer/slicerexecutionmodel:itk-v4.8.0_use_system_libraries-off /usr/src/SlicerExecutionModel/test/Docker/test.sh
+    - docker run -v ~/SlicerExecutionModel:/usr/src/SlicerExecutionModel -v ~/SlicerExecutionModel-build:/usr/src/SlicerExecutionModel-build slicer/slicerexecutionmodel:$DOCKER_TAG_1 /usr/src/SlicerExecutionModel/test/Docker/test.sh $DOCKER_TAG_1
 

test/Docker/run.sh

@@ -13,4 +13,4 @@ docker run \
   --rm \
   -v $script_dir/../..:/usr/src/SlicerExecutionModel \
     slicer/slicerexecutionmodel:$lower_case_tag \
-      /usr/src/SlicerExecutionModel/test/Docker/test.sh
+      /usr/src/SlicerExecutionModel/test/Docker/test.sh $lower_case_tag

test/Docker/test.sh

@@ -13,5 +13,6 @@ cd /usr/src/SlicerExecutionModel-build || die "Could not cd into the build direc
 cmake \
   -G Ninja \
   -DCMAKE_BUILD_TYPE:STRING=Release \
+  -DBUILDNAME:STRING=$1 \
     /usr/src/SlicerExecutionModel || die "CMake configuration failed"
 ctest -VV -D Experimental || die "ctest failed"