Add Ubuntu 18.04 Docker image

Contains:
- Qbs 1.13.1 (from QtCreator 4.9.2)
- Qt 5.12.4 for Linux (prebuilt)
- Qt 5.12.4 for Windows (compiled from source)
- gcc 7.4
- mingw-w64 (7.3)

This image can build Qbs and all its components for Linux
and Windows targets. It might supersede Debian stretch which
is not officially supported by Qt 5.12.

The only limitation is that it can neither build Chocolatey
packages nor run windeployqt.

Change-Id: Icee1f002483f68839d39c8c152a9c5d886dabcfb
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

1 files changed, 96 insertions, 0 deletions

diff --git a/docker/bionic/entrypoint.sh b/docker/bionic/entrypoint.sh
new file mode 100755
index 000000000..9d7b7c10f
--- /dev/null
+++ b/docker/bionic/entrypoint.sh
@@ -0,0 +1,96 @@
+#!/usr/bin/env bash
+set -e
+
+#############################################################################
+##
+## Copyright (C) 2019 Richard Weickelt <richard@weickelt.de>
+## Contact: https://www.qt.io/licensing/
+##
+## This file is part of Qbs.
+##
+## $QT_BEGIN_LICENSE:LGPL$
+## Commercial License Usage
+## Licensees holding valid commercial Qt licenses may use this file in
+## accordance with the commercial license agreement provided with the
+## Software or, alternatively, in accordance with the terms contained in
+## a written agreement between you and The Qt Company. For licensing terms
+## and conditions see https://www.qt.io/terms-conditions. For further
+## information use the contact form at https://www.qt.io/contact-us.
+##
+## GNU Lesser General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU Lesser
+## General Public License version 3 as published by the Free Software
+## Foundation and appearing in the file LICENSE.LGPL3 included in the
+## packaging of this file. Please review the following information to
+## ensure the GNU Lesser General Public License version 3 requirements
+## will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+##
+## GNU General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU
+## General Public License version 2.0 or (at your option) the GNU General
+## Public license version 3 or any later version approved by the KDE Free
+## Qt Foundation. The licenses are as published by the Free Software
+## Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+## included in the packaging of this file. Please review the following
+## information to ensure the GNU General Public License requirements will
+## be met: https://www.gnu.org/licenses/gpl-2.0.html and
+## https://www.gnu.org/licenses/gpl-3.0.html.
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+#
+# Entrypoint script when starting the container. The script checks the current
+# working directory and changes the uid/gid of developer/users to match whatever
+# is found in the working directory. This is useful to match the user and group
+# of mounted volumes into the container
+
+#
+# If not root, re-run script as root to fix ids
+#
+if [ "$(id -u)" != "0" ]; then
+    exec gosu root /sbin/entrypoint.sh "$@"
+fi
+
+#
+# Try to determine the uid of the working directory and adjust the current
+# user's uid/gid accordingly.
+#
+USER_GID=${USER_GID:-$(stat -c "%g" .)}
+USER_UID=${USER_UID:-$(stat -c "%u" .)}
+USER_NAME=${USER_NAME:-devel}
+USER_GROUP=${USER_GROUP:-devel}
+EXEC=""
+export HOME=/home/${USER_NAME}
+
+#
+# This is a problem on Linux hosts when we mount a folder from the
+# user file system and write artifacts into that. Thus, we downgrade
+# the current user and make sure that the uid and gid matches the one
+# of the mounted project folder.
+#
+# This work-around is not needed on Windows hosts as Windows doesn't
+# have such a concept.
+#
+if [ "${USER_UID}" != "0" ]; then
+    if [ "$(id -u ${USER_NAME})" != "${USER_UID}" ]; then
+        usermod -u ${USER_UID} ${USER_NAME}
+        # After changing the user's uid, all files in user's home directory
+        # automatically get the new uid.
+    fi
+    current_gid=$(id -g ${USER_NAME})
+    if [ "$(id -g ${USER_NAME})" != "${USER_GID}" ]; then
+        groupmod -g ${USER_GID} ${USER_GROUP}
+        # Set the new gid on all files in the home directory that still have the
+        # old gid.
+        find /home/${USER_NAME} -gid "${current_gid}" ! -type l -exec chgrp ${USER_GID} {} \;
+    fi
+fi
+EXEC="exec gosu ${USER_NAME}:${USER_GROUP}"
+
+if [ -z "$1" ]; then
+    ${EXEC} bash -l
+else
+    ${EXEC} bash -l -c "$*"
+fi