add Kdav (#83)

* add a kdav image
* do not install composer into the docker image
instead use a multi stage build that copies the resulting directory into the final image
* set default version in compose

resolves #54

kdav/start.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+# define default value for serverhostname and serverport if not passed into container
+KCCONF_SERVERHOSTNAME=${KCCONF_SERVERHOSTNAME:-127.0.0.1}
+KCCONF_SERVERPORT=${KCCONF_SERVERPORT:-236}
+ADDITIONAL_KOPANO_PACKAGES=${ADDITIONAL_KOPANO_PACKAGES:-""}
+
+set -eu # unset variables are errors & non-zero return values exit the whole script
+
+[ ! -z "$ADDITIONAL_KOPANO_PACKAGES" ] && apt update
+[ ! -z "$ADDITIONAL_KOPANO_PACKAGES" ] && for installpkg in "$ADDITIONAL_KOPANO_PACKAGES"; do
+	if [ $(dpkg-query -W -f='${Status}' $installpkg 2>/dev/null | grep -c "ok installed") -eq 0 ]; then
+		apt --assume-yes install $installpkg;
+	fi
+done
+
+echo "Ensure directories"
+mkdir -p /run/sessions
+
+if [ "$KCCONF_SERVERHOSTNAME" == "127.0.0.1" ]; then
+	echo "kDAV is using the default: connection"
+else
+	echo "kDAV is using an ip connection"
+	sed -e "s#define([\"']MAPI_SERVER[\"'],\s*[\"']default:[\"'])#define('MAPI_SERVER', 'https://${KCCONF_SERVERHOSTNAME}:${KCCONF_SERVERPORT}/kopano')#" \
+	    -i /usr/share/kdav/config.php
+fi
+
+# change root uri to /kdav
+sed -e "s#define('DAV_ROOT_URI', '/');#define('DAV_ROOT_URI', '/kdav/');#" -i /usr/share/kdav/config.php
+
+echo "Ensure config ownership"
+chown -R www-data:www-data /run/sessions
+
+touch /var/log/kdav/kdav.log
+touch /var/log/kdav/kdav-error.log
+chown www-data:www-data /var/log/kdav/kdav.log /var/log/kdav/kdav-error.log
+tail --pid=$$ -F --lines=0 -q /var/log/kdav/kdav.log &
+tail --pid=$$ -F --lines=0 -q /var/log/kdav/kdav-error.log &
+
+echo "Starting Apache"
+rm -f /run/apache2/apache2.pid
+set +u
+source /etc/apache2/envvars
+# cleaning up env variables
+unset "${!KCCONF_@}"
+exec /usr/sbin/apache2 -DFOREGROUND