diff --git a/.github/workflows/run-all-tests.yml b/.github/workflows/run-all-tests.yml
index 07023f5..b3e99c9 100644
--- a/.github/workflows/run-all-tests.yml
+++ b/.github/workflows/run-all-tests.yml
@@ -15,6 +15,14 @@ jobs:
         run: docker-compose up -d --build
       - name: Run test suite on Alpine
         run: test/run-test.sh alpine
+  test-centos6:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Build the docker-compose stack
+        run: docker-compose up -d --build
+      - name: Run test suite on centos6
+        run: test/run-test.sh centos6
   test-debian:
     runs-on: ubuntu-latest
     steps:
@@ -22,4 +30,36 @@ jobs:
       - name: Build the docker-compose stack
         run: docker-compose up -d --build
       - name: Run test suite on Debian
-        run: test/run-test.sh debian
+      run: test/run-test.sh debian
+  test-duckdns:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Build the docker-compose stack
+        run: docker-compose up -d --build
+      - name: Run test suite on Ubuntu using DuckDNS
+        run: test/run-test.sh duckdns
+  test-ubuntu:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Build the docker-compose stack
+        run: docker-compose up -d --build
+      - name: Run test suite on Ubuntu
+        run: test/run-test.sh ubuntu
+  test-ubuntu16:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Build the docker-compose stack
+        run: docker-compose up -d --build
+      - name: Run test suite on Ubuntu16
+        run: test/run-test.sh ubuntu16
+  test-ubuntu18:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Build the docker-compose stack
+        run: docker-compose up -d --build
+      - name: Run test suite on Ubuntu18
+        run: test/run-test.sh ubuntu18
diff --git a/test/restart-nginx b/test/restart-nginx
index d35f60f..f947d8d 100755
--- a/test/restart-nginx
+++ b/test/restart-nginx
@@ -4,5 +4,5 @@ if [ "$GETSSL_HOST" = "alpine.getssl.test" ]; then
     killall -HUP nginx >&3-
     sleep 5
 else
-    service nginx restart >&3-
+    service nginx restart >/dev/null >&3-
 fi