Adding image tests

tests/image.bats

@@ -0,0 +1,22 @@
+#!/usr/bin/env bats
+
+load ../common
+
+setup() {
+  ./bin/rebuild.sh
+}
+
+@test "Creates non-root Shib IDP home" {
+  result="$(docker run -i $maintainer/$imagename ls /opt/shibboleth/current/bin/)"
+  [ "$result" != '' ]
+}
+
+@test "Retains first-run experience" {
+  result="$(docker run -i $maintainer/$imagename ls /tmp/firsttimerunning)"
+  [ "$result" != '' ]
+}
+
+@test "Contains java" {
+  run docker run -i $maintainer/$imagename which java
+  [ "$status" -eq 0 ]
+}