Fix script by adding path to Dockerfile (apache#5958)

* Clean install script

* Add test for pip installations

* Remove debug statements & comments

* Make test runnable as script and from framework

* Fix path to Dockerfiles

* Putting failing cases at the end

tests/jenkins/run_test_pip_installations.sh

@@ -11,9 +11,10 @@ fi
 
 WORKSPACE=$( echo "$1" | tr '[:upper:]' '[:lower:]' )
 
-PYTHON_VERSIONS=('2.7' '3.4' '3.5' '3.6')
-DEVICES=('pip_cpu' 'pip_cu75' 'pip_cu80')
+PYTHON_VERSIONS=('2.7' '3.4' '3.6' '3.5')
+DEVICES=('pip_cu75' 'pip_cu80' 'pip_cpu')
 
+CI_BUILD_DIR=tests/ci_build/pip_tests
 # build Docker images and test pip installation for each device
 for DEV in "${DEVICES[@]}"; do
 
@@ -28,8 +29,8 @@ for DEV in "${DEVICES[@]}"; do
     DOCKERFILE="Dockerfile.${DEV}"
     DOCKERFILE_DEVICE="Dockerfile.in.${DEV}"
     rm -rf ${DOCKERFILE}
-    cp ${DOCKERFILE_DEVICE} ${DOCKERFILE}
-    cat Dockerfile.pip_dependencies >> ${DOCKERFILE}
+    cp ${CI_BUILD_DIR}/${DOCKERFILE_DEVICE} ${DOCKERFILE}
+    cat ${CI_BUILD_DIR}/Dockerfile.pip_dependencies >> ${DOCKERFILE}
 
     # build Docker image
     DOCKER_TAG="mxnet/${DEV}"