Rebuild image with labels after finding the file; move example to example dir

example/Dockerfile

@@ -0,0 +1,4 @@
+FROM busybox
+ADD testfile.txt .
+RUN rm testfile.txt && mkdir app && echo "hello" > /app/othertestfile.txt
+

example/example.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+set -e
+
+source=$(dirname "${BASH_SOURCE[0]}")
+pushd "$source" &> /dev/null
+
+# Build example image
+docker build . -t test-image &> /dev/null
+
+# Execute docker artifact to add a label to /app/othertestfile.txt
+set +e
+../docker-artifact.sh test-image /app/othertestfile.txt
+
+popd &> /dev/null
+

example/testfile.txt

@@ -0,0 +1 @@
+hi