Migrate minio-py to use latest release 2.2.4

Also fix unicode support for PYTHON by adding LANG env.

docker-library/python@dbe3e24

Dockerfile

@@ -2,6 +2,8 @@ FROM ubuntu:16.04
 
 ENV DEBIAN_FRONTEND noninteractive
 
+ENV LANG C.UTF-8
+
 ENV GOROOT /usr/local/go
 
 ENV GOPATH /usr/local

Dockerfile.dev

@@ -2,6 +2,8 @@ FROM ubuntu:16.04
 
 ENV DEBIAN_FRONTEND noninteractive
 
+ENV LANG C.UTF-8
+
 ENV GOROOT /usr/local/go
 
 ENV GOPATH /usr/local

build/py/install.sh

@@ -21,6 +21,9 @@ set -e
 install() {
     apt-get install -yq python3
     apt-get install -yq python3-pip
+    # python3 installation doesn't create /usr/bin/python symlink,
+    # create this pro-actively.
+    update-alternatives --install /usr/bin/python python /usr/bin/python3.5 1
 }
 
 # Remove python dependencies

build/py/minio-py.sh

@@ -19,16 +19,25 @@ set -e
 
 _init() {
     MINIO_PY_SDK_PATH="/mint/run/core/minio-py"
-    MINIO_PY_SDK_VERSION="2.2.2"
+    MINIO_PY_SDK_VERSION="2.2.4"
 }
 
 installDeps() {
     pip3 install --user -r ${MINIO_PY_SDK_PATH}/requirements.txt
     pip3 install minio==$MINIO_PY_SDK_VERSION
 }
 
+installFunctionalTest() {
+    curl https://raw.githubusercontent.com/minio/minio-py/${MINIO_PY_SDK_VERSION}/tests/functional/tests.py > /usr/bin/minio-py-functional
+    # This is needed until we make a new minio-py release.
+    sed -i 's/DATA_DIR/MINT_DATA_DIR/g' /usr/bin/minio-py-functional
+    chmod +x /usr/bin/minio-py-functional
+    sync
+}
+
 main() {
     installDeps
+    installFunctionalTest
 }
 
 _init "$@" && main