Bump version to 2.2.0, Fixed Gosu installation

.bumpversion.cfg

@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 2.1.0
+current_version = 2.2.0
 
 [bumpversion:file:setup.py]
 search = version='{current_version}'

docker/base/Dockerfile

@@ -5,15 +5,16 @@ MAINTAINER Social Feed Manager <sfm@gwu.edu>
 ARG DEBIAN_FRONTEND=noninteractive
 
 # grab gosu for easy step-down from root
-ENV GOSU_VERSION 1.10
+ENV GOSU_VERSION 1.11
 RUN set -x \
 	&& apt-get update && apt-get install -y --no-install-recommends ca-certificates wget && rm -rf /var/lib/apt/lists/* \
 	&& wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
 	&& wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture).asc" \
 	&& export GNUPGHOME="$(mktemp -d)" \
 	&& gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
 	&& gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
-	&& rm -fr "$GNUPGHOME" /usr/local/bin/gosu.asc \
+	&& command -v gpgconf && gpgconf --kill all || : \
+	&& rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc \
 	&& chmod +x /usr/local/bin/gosu \
 	&& gosu nobody true
 

setup.py

@@ -2,7 +2,7 @@
 
 setup(
     name='sfmutils',
-    version='2.1.0',
+    version='2.2.0',
     url='https://github.com/gwu-libraries/sfm-utils',
     author='Social Feed Manager',
     author_email='sfm@gwu.edu',