Add spn testing setup

spn/testing/simple/join.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+cd "$( dirname "${BASH_SOURCE[0]}" )"
+
+realpath() {
+    path=`eval echo "$1"`
+    folder=$(dirname "$path")
+    echo $(cd "$folder"; pwd)/$(basename "$path"); 
+}
+
+leftover=$(docker ps -a | grep spn-test-simple-me | cut -d" " -f1)
+if [[ $leftover != "" ]]; then
+  docker stop $leftover
+  docker rm $leftover
+fi
+
+if [[ ! -f "../../../cmds/hub/hub" ]]; then
+  echo "please build the hub cmd using cmds/hub/build"
+  exit 1
+fi
+
+SPN_TEST_BIN="$(realpath ../../../cmds/hub/hub)"
+SPN_TEST_DATA_DIR="$(realpath ./testdata)"
+if [[ ! -d "$SPN_TEST_DATA_DIR" ]]; then
+  mkdir "$SPN_TEST_DATA_DIR"
+fi
+SPN_TEST_SHARED_DATA_DIR="$(realpath ./testdata/shared)"
+if [[ ! -d "$SPN_TEST_SHARED_DATA_DIR" ]]; then
+  mkdir "$SPN_TEST_SHARED_DATA_DIR"
+fi
+
+docker run -ti \
+--name spn-test-simple-me \
+--hostname me \
+--network spn-test-simple_default \
+-v $SPN_TEST_BIN:/opt/hub_me:ro \
+-v $SPN_TEST_DATA_DIR/me:/opt/data \
+-v $SPN_TEST_SHARED_DATA_DIR:/opt/shared \
+--entrypoint /opt/hub_me \
+toolset.safing.network/dev \
+--devmode --api-address 0.0.0.0:8081 \
+--data /opt/data -log trace --spn-map test --bootstrap-file /opt/shared/bootstrap.dsd