diff --git a/.cico-pr.pipeline b/.cico-pr.pipeline
index 8cef077d..14edbed4 100644
--- a/.cico-pr.pipeline
+++ b/.cico-pr.pipeline
@@ -65,8 +65,8 @@ node('factory2'){
 
         stage('Run Test Suites') {
             timeout(20) {
-                onmyduffynode 'docker run -v ~/fm-orchestrator:/src:Z quay.io/factory2/mbs-test-centos'
-                onmyduffynode 'docker run -v ~/fm-orchestrator:/src:Z quay.io/factory2/mbs-test-fedora'
+                onmyduffynode 'contrib/run-unittests.sh'
+                onmyduffynode 'contrib/run-unittests.sh --py3'
             }
         }
 
diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 00000000..ac48b1cb
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,5 @@
+.env/
+.pytest_cache/
+.tox/
+.vagrant/
+.vscode/
diff --git a/conf/config.py b/conf/config.py
index a9e0f3c3..583bfdd0 100644
--- a/conf/config.py
+++ b/conf/config.py
@@ -1,4 +1,4 @@
-from os import path
+from os import environ, path
 
 # FIXME: workaround for this moment till confdir, dbdir (installdir etc.) are
 # declared properly somewhere/somehow
@@ -98,7 +98,7 @@ class TestConfiguration(BaseConfiguration):
     BUILD_LOGS_NAME_FORMAT = "build-{id}.log"
     LOG_BACKEND = "console"
     LOG_LEVEL = "debug"
-    SQLALCHEMY_DATABASE_URI = "sqlite://"
+    SQLALCHEMY_DATABASE_URI = environ.get("DATABASE_URI", "sqlite://")
     DEBUG = True
     MESSAGING = "in_memory"
     PDC_URL = "https://pdc.fedoraproject.org/rest_api/v1"
diff --git a/contrib/run-unittests.sh b/contrib/run-unittests.sh
new file mode 100755
index 00000000..443ef17f
--- /dev/null
+++ b/contrib/run-unittests.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+#
+# Run MBS unit tests matrix
+#     | SQLite   |   PostgreSQL
+# ------------------------------
+# py2 | x        |  x
+# py3 | x        |  x
+#
+# Command line options:
+# --py3: run tests inside mbs-test-fedora container with Python 3. If not
+#        set, tests will run in mbs-test-centos with Python 2 by default.
+# --with-pgsql: run tests with PostgreSQL, otherwise SQLite is used.
+#
+# Please note that, both of them can have arbitrary value as long as one of
+# them is set. So, generally, it works by just setting to 1 or yes for
+# simplicity.
+
+enable_py3=
+with_pgsql=
+
+for arg in "$@"; do
+    case $arg in
+        --py3) enable_py3=1 ;;
+        --with-pgsql) with_pgsql=1 ;;
+    esac
+done
+
+image_ns=quay.io/factory2
+postgres_image="postgres:9.5.17"
+db_container_name="mbs-test-db"
+source_dir="$(realpath "$(dirname "$0")/..")"
+volume_mount="${source_dir}:/src:Z"
+db_name=mbstest
+db_password=mbstest
+pgdb_uri="postgresql+psycopg2://postgres:${db_password}@db/${db_name}"
+db_bg_container=
+
+if [ -n "$enable_py3" ]; then
+    test_image="${image_ns}/mbs-test-fedora"
+else
+    test_image="${image_ns}/mbs-test-centos"
+fi
+
+container_opts=(--rm -i -t -v "${volume_mount}" --name mbs-test)
+
+if [ -n "$with_pgsql" ]; then
+    container_opts+=(--link "${db_container_name}":db -e "DATABASE_URI=$pgdb_uri")
+
+    # Database will be generated automatically by postgres container during launch.
+    # Setting this password makes it possible to get into database container
+    # and check the data.
+    db_bg_container=$(
+        docker run --rm --name $db_container_name \
+            -e POSTGRES_PASSWORD=$db_password \
+            -e POSTGRES_DB=$db_name \
+            -d \
+            $postgres_image
+    )
+fi
+
+(cd "$source_dir" && docker run "${container_opts[@]}" $test_image)
+
+rv=$?
+
+[ -n "$db_bg_container" ] && docker stop "$db_bg_container"
+exit $rv
+
diff --git a/docker/Dockerfile-tests b/docker/Dockerfile-tests
index fdeb4d5c..a25a21e8 100644
--- a/docker/Dockerfile-tests
+++ b/docker/Dockerfile-tests
@@ -38,6 +38,7 @@ RUN yum -y install \
     python-solv \
     python-sqlalchemy \
     python2-pungi \
+    python-psycopg2 \
     # Test-only dependencies
     python-flake8 \
     python-mock \
diff --git a/docker/Dockerfile-tests-py3 b/docker/Dockerfile-tests-py3
index c2db2db4..efc2c1e9 100644
--- a/docker/Dockerfile-tests-py3
+++ b/docker/Dockerfile-tests-py3
@@ -28,6 +28,7 @@ RUN dnf -y install \
     python3-solv \
     python3-sqlalchemy \
     python3-pungi \
+    python3-psycopg2 \
     # Test-only dependencies
     python3-pytest \
     python3-flake8 \
diff --git a/docs/CONTRIBUTING.rst b/docs/CONTRIBUTING.rst
index 827400cb..e2e7d8a8 100644
--- a/docs/CONTRIBUTING.rst
+++ b/docs/CONTRIBUTING.rst
@@ -1,28 +1,33 @@
 Running Tests
 =============
 
-Since MBS requires Python dependencies that aren't available using PyPi (e.g. libsolv bindings),
-there are container images (based on CentOS and Fedora) that can be used to run the code analysis and unit tests.
+Since MBS requires Python dependencies that aren't available using PyPi (e.g.
+libsolv bindings), there are container images (based on CentOS and Fedora) that
+can be used to run the code analysis and unit tests.
 
-To run the tests, you must first install `podman` with::
+* ``docker/Dockerfile-tests`` is based on ``centos:7``, inside which tests run
+  with Python 2.
 
-    $ sudo dnf install podman
+* ``docker/Dockerfile-tests-py3`` is based on ``fedora:29``, inside which tests
+  run with Python 3.
 
-From the repo root, run the tests with::
+Both of these images are available from Quay.io under `factory2 organization`_
+and named ``mbs-test-centos`` and ``mbs-test-fedora`` individually. Refer to
+section "Updating test images in Quay" to learn how to manage these images.
 
-    $ podman run -t --rm -v $PWD:/src:Z quay.io/factory2/mbs-test-centos
+.. _factory2: https://quay.io/organization/factory2
 
-To run the tests with Python 3 use the image based on Fedora::
+To run the tests, just simply run: ``contrib/run-unittests.sh``
 
-    $ podman run -t --rm -v $PWD:/src:Z quay.io/factory2/mbs-test-fedora
+By default, this script runs tests inside container ``mbs-test-centos``
+with Python 2 and SQLite database.
 
-If you need to build the container image locally use::
+There are options to change the tests enviornment:
 
-    $ podman build -t mbs-test-centos -f docker/Dockerfile-tests .
+* ``--py3``: run tests with Python 3.
+* ``--with-pgsql``: run tests with PostgreSQL database.
 
-or::
-
-    $ podman build -t mbs-test-fedora -f docker/Dockerfile-tests-py3 .
+For example, ``contrib/run-unittests.sh --py3 --with-pgsql``.
 
 Style Guide
 ===========
@@ -184,7 +189,19 @@ Historical Names of Module Build Service
 Updating test images in Quay
 ============================
 
-The Quay web UI can be used to update the images used for testing:
+The docker images inside which to run tests could be built locally or via Quay
+web UI.
+
+For building locally, use ``podman build`` or ``docker build``. For example
+with ``podman``::
+
+    $ podman build -t quay.io/factory2/mbs-test-centos -f docker/Dockerfile-tests .
+
+or::
+
+    $ podman build -t quay.io/factory2/mbs-test-fedora -f docker/Dockerfile-tests-py3 .
+
+To update the images used for testing via Quay web UI:
 
 * https://quay.io/repository/factory2/mbs-test-centos
 * https://quay.io/repository/factory2/mbs-test-fedora
diff --git a/tox.ini b/tox.ini
index c421aa1d..03c86a79 100644
--- a/tox.ini
+++ b/tox.ini
@@ -19,6 +19,8 @@ exclude =
 [testenv]
 usedevelop = true
 sitepackages = true
+# Allow to switch database backend for running tests.
+passenv = DATABASE_URI
 whitelist_externals =
     flake8
     py.test-3