CI: Build custom Fedora image that has systemd installed

With latest Fedora container images (starting from fedora:30) it seems
that the systemd script files have been removed. This patch builds a custom
fedora container image with systemd package installed, giving us the right
systemd-enabled environment to run PKI tests

Signed-off-by: Dinesh Prasanth M K <dmoluguw@redhat.com>

.github/workflows/required-tests.yml

@@ -108,8 +108,11 @@ jobs:
         - name: Clone the repository
           uses: actions/checkout@v2
 
+        - name: Build pki-test container image with systemd
+          run: docker build ci/ -t pki-fedora-${{ matrix.os }} --build-arg OS_VERSION=${{ matrix.os }}
+
         - name: Setup required test environment
-          run: IMAGE=fedora:${{ matrix.os }} ci/runner-init.sh
+          run: IMAGE=pki-fedora-${{ matrix.os }} ci/runner-init.sh
 
         - name: Download PKI binaries from Build job
           uses: actions/download-artifact@v1
@@ -205,8 +208,11 @@ jobs:
         - name: Clone the repository
           uses: actions/checkout@v2
 
+        - name: Build pki-test container image with systemd
+          run: docker build ci/ -t pki-fedora-${{ matrix.os }} --build-arg OS_VERSION=${{ matrix.os }}
+
         - name: Setup required test environment
-          run: IMAGE=fedora:${{ matrix.os }} ci/runner-init.sh
+          run: IMAGE=pki-fedora-${{ matrix.os }} ci/runner-init.sh
 
         - name: Download PKI binaries from Build job
           uses: actions/download-artifact@v1

ci/Dockerfile

@@ -0,0 +1,8 @@
+ARG OS_VERSION=latest
+FROM fedora:$OS_VERSION
+
+# Install systemd since pki runs as a systemd service
+RUN true \
+        && dnf update -y --refresh \
+        && dnf install -y systemd \
+        && true

ci/runner-init.sh

@@ -8,7 +8,8 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 #
 
-docker pull ${IMAGE}
+# list the available images
+docker images
 
 docker run \
     --detach \