Added simple docker entrypoint for now.

chainquery/docker-entrypoint.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+#!/bin/bash
+
+# default to run whatever the user wanted like "/bin/bash"
+## If user runs no need to run any more of the entrypoint script.
+if [[ -z "$@" ]]; then
+  echo "User did not attempt input. Now executing docker-entrypoint."
+else
+  echo "Running $@."
+  exec "$@"
+  exit 1
+fi
+
+/bin/bash