Add scripts to run standalone in Docker (#54)

Fixes #32

tools/pulsar/docker/README.adoc

@@ -0,0 +1,32 @@
+== Docker scripts for Pulsar
+
+=== Pulsar Standalone
+Runs a local standalone Pulsar cluster in Docker.
+
+* The broker is available at  `pulsar://localhost:6650`.
+* The admin is available at  `http://localhost:8080`
+* Two Docker volumes (`pulsardata`, `pulsarconf`) are created to store the data, metadata, and configuration in order to not start "fresh" every time the container is restarted.
+
+
+==== Start
+To start the cluster run the following script from project root dir:
+[source,shell]
+----
+./tools/pulsar/docker/standalone/pulsar-start.sh
+----
+
+==== Stop
+To stop the cluster run the following script from project root dir:
+[source,shell]
+----
+./tools/pulsar/docker/standalone/pulsar-stop.sh
+----
+
+==== Destroy
+To completely remove the cluster and volumes run the following script from project root dir:
+[source,shell]
+----
+./tools/pulsar/docker/standalone/pulsar-destroy.sh
+----
+
+More information can be found in the official https://pulsar.apache.org/docs/next/getting-started-docker[Pulsar docs].

tools/pulsar/docker/standalone/pulsar-destroy.sh

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+#!/bin/bash
+
+echo "Finding and removing Pulsar container..."
+docker ps -a | grep "apachepulsar/pulsar" | awk '{print $1}' | xargs docker rm -f
+echo "Removing Pulsar volumes..."
+docker volume rm pulsardata pulsarconf
+echo "All traces of Pulsar standalone removed"

tools/pulsar/docker/standalone/pulsar-start.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+docker run -it -p 6650:6650 -p 8080:8080 \
+  --mount source=pulsardata,target=/pulsar/data \
+  --mount source=pulsarconf,target=/pulsar/conf \
+  apachepulsar/pulsar:2.10.1 \
+  bin/pulsar standalone

tools/pulsar/docker/standalone/pulsar-stop.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+echo "Finding and stopping Pulsar container..."
+docker ps -a | grep "apachepulsar/pulsar" | awk '{print $1}' | xargs docker stop
+echo "Container stopped - you can run 'pulsar-start.sh' when/if you want to restart it"