diff --git a/Dockerfile b/Dockerfile
index 9aba935..f6b2ad1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,14 +1,16 @@
 FROM openjdk:8-jre
 ARG DRUID_VERSION=0.19.0
-
+ARG DRUID_COORDINATOR_CONF_FILE=apache-druid-${DRUID_VERSION}/conf/druid/single-server/micro-quickstart/coordinator-overlord/runtime.properties
 
 RUN wget http://apache.crihan.fr/dist/druid/${DRUID_VERSION}/apache-druid-${DRUID_VERSION}-bin.tar.gz \
     && tar -xzf apache-druid-${DRUID_VERSION}-bin.tar.gz \
     && rm apache-druid-${DRUID_VERSION}-bin.tar.gz \
     && apt-get update \
     && apt-get install -y bash perl \
-    && rm -rf /var/lib/apt/lists/*
-
+    && rm -rf /var/lib/apt/lists/* \
+    && echo druid.manager.segments.pollDuration=PT5S >> ${DRUID_COORDINATOR_CONF_FILE} \
+    && echo druid.manager.config.pollDuration=PT5S >> ${DRUID_COORDINATOR_CONF_FILE} \
+    && echo druid.manager.rules.pollDuration=PT5S >> ${DRUID_COORDINATOR_CONF_FILE}
 
 ENV DRUID_VERSION=$DRUID_VERSION
 
diff --git a/Dockerfile.nano b/Dockerfile.nano
index 4c9933f..bce022b 100644
--- a/Dockerfile.nano
+++ b/Dockerfile.nano
@@ -1,13 +1,16 @@
 FROM openjdk:8-jre
 ARG DRUID_VERSION=0.19.0
-
+ARG DRUID_COORDINATOR_CONF_FILE=apache-druid-${DRUID_VERSION}/conf/druid/single-server/nano-quickstart/coordinator-overlord/runtime.properties
 
 RUN wget http://apache.crihan.fr/dist/druid/${DRUID_VERSION}/apache-druid-${DRUID_VERSION}-bin.tar.gz \
     && tar -xzf apache-druid-${DRUID_VERSION}-bin.tar.gz \
     && rm apache-druid-${DRUID_VERSION}-bin.tar.gz \
     && apt-get update \
     && apt-get install -y bash perl \
-    && rm -rf /var/lib/apt/lists/*
+    && rm -rf /var/lib/apt/lists/* \
+    && echo druid.manager.segments.pollDuration=PT5S >> ${DRUID_COORDINATOR_CONF_FILE} \
+    && echo druid.manager.config.pollDuration=PT5S >> ${DRUID_COORDINATOR_CONF_FILE} \
+    && echo druid.manager.rules.pollDuration=PT5S >> ${DRUID_COORDINATOR_CONF_FILE}
 
 ENV DRUID_VERSION=$DRUID_VERSION
 
diff --git a/README.md b/README.md
index 0915994..9b4f68d 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,31 @@
-# micro-druid
-Dockerfiles to run [nano/micro](https://github.com/apache/druid/blob/94298f780927923b84f3127ec07c84cb5b115145/docs/operations/single-server.md#nano-quickstart-1-cpu-4gb-ram) setups of [druid](https://github.com/apache/druid) for e2e tests.
+Micro & Nano druid, for E2E tests
+=======================================
+
+Dockerfiles to run nano and micro setups of [druid](https://github.com/apache/druid) for e2e tests. Some configurations are applied to maximize the response time of the Druid docker but should in no way refer to a production cluster.
+
+Arguments
+-------------
 
 Arguments that can be set while building:
-- `DRUID_VERSION` (0.18.0 by default)
\ No newline at end of file
+- `DRUID_VERSION`: 0.19.0 by default
+- `DRUID_COORDINATOR_CONF_FILE`: path to the runtime.properties of the coordinator service. 
+
+Required hardware
+------------------
+
+Nano
+*********
+
+* 1 CPU
+* 4GB RAM
+* Launch command: `bin/start-nano-quickstart`
+* Configuration directory: `conf/druid/single-server/nano-quickstart`
+
+
+Micro
+*********
+
+* 4 CPU
+* 16GB RAM
+* Launch command: `bin/start-micro-quickstart`
+* Configuration directory: `conf/druid/single-server/micro-quickstart`