integration: test case for HOME

Signed-off-by: Yoan Blanc <yoan@dosimple.ch>

integration/dockerfiles/Dockerfile_test_user_home

@@ -0,0 +1,27 @@
+# Copyright 2020 Google, Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+FROM debian:9.11
+
+# default values for the root user.
+RUN touch $HOME/hello
+
+# testuser1 with the default home created by useradd.
+
+RUN groupadd testgroup && \
+    useradd --create-home --gid testgroup testuser
+
+USER testuser:testgroup
+
+RUN touch $HOME/hello