Add contrib example to run tests with docker

contrib/docker-test.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+
+MYSQL_CONTAINER=icingaweb2_director_mysql
+
+echo "Starting MySQL container..."
+docker run -d \
+    -e MYSQL_ROOT_PASSWORD=onlyforadmin \
+    -e MYSQL_DATABASE=icingaweb2 \
+    -e MYSQL_USER=icingaweb2 \
+    -e MYSQL_PASSWORD=rosebud \
+    --name "$MYSQL_CONTAINER" \
+    mariadb >/dev/null
+
+echo "Running tests..."
+docker run --rm -i \
+    --link "$MYSQL_CONTAINER":mysql \
+    -v `pwd`:/app \
+    -e DIRECTOR_TESTDB_RES="Director MySQL TestDB" \
+    -e DIRECTOR_TESTDB_HOST="mysql" \
+    -e DIRECTOR_TESTDB_USER="icingaweb2" \
+    -e DIRECTOR_TESTDB_PASSWORD="rosebud" \
+    -e DIRECTOR_TESTDB="icingaweb2" \
+    lazyfrosch/icingaweb2-test:5.6 \
+    sh - \
+<<EOF
+    set -ex
+    cd /app
+    composer install
+    {
+        set +x
+        count=0
+        while ! nc -w 1 -z mysql 3306
+        do
+            echo "Waiting for MySQL to get ready..."
+            sleep 2
+            : \$((count++))
+            if [ \$count -gt 10 ]; then
+                echo "Waiting for MySQL timed out!"
+                exit 2
+            fi
+        done
+    }
+    ret=0
+    composer exec phpunit --verbose || ret=\$?
+    #composer exec phpcs application/ library/ test/php/ *.php || ret=\$?
+    exit \$ret
+EOF
+
+echo "Stopping MySQL container..."
+docker kill "$MYSQL_CONTAINER"
+docker rm "$MYSQL_CONTAINER"