fix(Dockerfile): pin azure-storage to version wal-e currently lusing

Author: vdice

Dockerfile

@@ -40,7 +40,9 @@ RUN buildDeps='gcc git libffi-dev libssl-dev python3-dev python3-pip python3-whe
     chown -R postgres /run/postgresql && \
     pip install --disable-pip-version-check --no-cache-dir \
         envdir==0.7 \
-        wal-e[aws,azure,google,swift]==v1.0.2 && \
+        wal-e[aws,azure,google,swift]==v1.0.2 \
+        # pin azure-storage to version wal-e uses (see docker-entrypoint.sh)
+        azure-storage==0.20.0 && \
     # "upgrade" boto to 2.43.0 + the patch to fix minio connections
     pip install --disable-pip-version-check --no-cache-dir --upgrade git+https://github.com/deis/boto@88c980e56d1053892eb940d43a15a68af4ebb5e6 && \
     # cleanup

rootfs/bin/create_bucket

@@ -11,7 +11,7 @@ from boto.s3.connection import S3Connection, OrdinaryCallingFormat
 from oauth2client.service_account import ServiceAccountCredentials
 from gcloud.storage.client import Client
 from gcloud import exceptions
-from azure.storage.blob import BlockBlobService
+from azure.storage.blob import BlobService
 
 def bucket_exists(conn, name):
     bucket = conn.lookup(name)
@@ -60,7 +60,7 @@ elif os.getenv('DATABASE_STORAGE') == "gcs":
         conn.create_bucket(bucket_name)
 
 elif os.getenv('DATABASE_STORAGE') == "azure":
-    conn = BlockBlobService(account_name=os.getenv('WABS_ACCOUNT_NAME'), account_key=os.getenv('WABS_ACCESS_KEY'))
+    conn = BlobService(account_name=os.getenv('WABS_ACCOUNT_NAME'), account_key=os.getenv('WABS_ACCESS_KEY'))
     #It doesn't throw an exception if the container exists by default(https://github.com/Azure/azure-storage-python/blob/master/azure/storage/blob/baseblobservice.py#L504).
     conn.create_container(bucket_name)