FEATURE: add test setup for running the CephFS S3 compatibility suite

test/s3/compatibility/Dockerfile

@@ -0,0 +1,11 @@
+# the tests only support python 3.6, not newer
+FROM ubuntu:latest
+
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive TZ=Etc/UTC apt-get install -y git-core sudo tzdata
+RUN git clone https://github.com/ceph/s3-tests.git
+WORKDIR s3-tests
+
+# we pin a certain commit
+RUN git checkout 9a6a1e9f197fc9fb031b809d1e057635c2ff8d4e
+
+RUN ./bootstrap