Revert "Merge pull request #22 from r4j4h/search-guard"

This reverts commit ba28dcf5f105ea1492199964ba14cd3e014d6272, reversing
changes made to 10783cfded21bf7db102e550f3e085fe5332c343.

Dockerfile

@@ -1,14 +1,10 @@
 FROM alpine:3.6
 
-RUN apk --no-cache add python py-setuptools py-pip gcc libffi py-cffi python-dev libffi-dev py-openssl musl-dev linux-headers openssl-dev && \
+RUN apk --no-cache add python py-setuptools py-pip && \
     pip install elasticsearch-curator==5.4.0 && \
-    pip install requests-aws4auth==0.9 && \
-    pip install cryptography==2.1.3 && \
-    apk del py-pip gcc python-dev libffi-dev musl-dev linux-headers openssl-dev && \
-    sed -i '/import sys/a urllib3.contrib.pyopenssl.inject_into_urllib3()' /usr/bin/curator && \
-    sed -i '/import sys/a import urllib3.contrib.pyopenssl' /usr/bin/curator && \
-    sed -i '/import sys/a import urllib3' /usr/bin/curator
+    pip install boto3 && \
+    pip install requests-aws4auth && \
+    apk del py-pip
 
 USER nobody:nobody
-
 ENTRYPOINT ["/usr/bin/curator"]