Molecule container for running Molecule

Add own Dockerfile and build script for creating
customized molecule runner image from Molecule image
provided by https://quay.io/repository/ansible/molecule.

Customization enables running of molecule container with
current host's user to avoid root owned files bloating
to developer's machine.

Add wrapper script molecule.sh to utilize custom image
and suitable for testing offline-installer roles.

Issue-ID: OOM-1768

Change-Id: I14ed75decb8fa637c044675543de56f1c0796271
Signed-off-by: Samuli Silvius <s.silvius@partner.samsung.com>

2 files changed, 52 insertions, 0 deletions

diff --git a/ansible/test/molecule-docker/Dockerfile b/ansible/test/molecule-docker/Dockerfile
new file mode 100644
index 00000000..e4207f2e
--- /dev/null
+++ b/ansible/test/molecule-docker/Dockerfile
@@ -0,0 +1,20 @@
+FROM quay.io/ansible/molecule:2.20
+
+ARG USER_ID
+ARG GROUP_ID
+ARG DOCKER_GROUP_ID
+
+# When user/group provided, create user to have matching ids (for the host user)
+# to avoid this docker writing files as root owned
+RUN if [ ${USER_ID:-0} -ne 0 ] && [ ${GROUP_ID:-0} -ne 0 ]; then \
+    # shadow needed for addgroup
+    # sshpass needed for accessing docker_host (localhost) with ssh and without password prompt
+    apk --no-cache add shadow sshpass && \
+    addgroup -g ${GROUP_ID} molecule && \
+    adduser -D -u ${USER_ID} -G molecule molecule && \
+    # Add user to same docker group as in docker_host to be able to use docker driver as sudo
+    groupadd docker-host -g ${DOCKER_GROUP_ID} && \
+    usermod -aG ${DOCKER_GROUP_ID} molecule \
+;fi
+
+USER molecule
diff --git a/ansible/test/molecule-docker/build.sh b/ansible/test/molecule-docker/build.sh
new file mode 100755
index 00000000..0b65f2a7
--- /dev/null
+++ b/ansible/test/molecule-docker/build.sh
@@ -0,0 +1,32 @@
+#! /usr/bin/env bash
+
+#   COPYRIGHT NOTICE STARTS HERE
+
+#   Copyright 2019 © Samsung Electronics Co., Ltd.
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+#   COPYRIGHT NOTICE ENDS HERE
+
+SCRIPT_DIR=$(dirname "${0}")
+LOCAL_PATH=$(readlink -f "$SCRIPT_DIR")
+
+set -e
+
+docker build \
+    --build-arg USER_ID=$(id -u ${USER}) \
+    --build-arg GROUP_ID=$(id -g ${USER}) \
+    --build-arg DOCKER_GROUP_ID=$(getent group docker | cut -f 3 -d ':') \
+    -t molecule-dev:2.20.0 \
+    ${LOCAL_PATH}
+