diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index d82a86d..b493d52 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -26,6 +26,9 @@ jobs:
 
     runs-on: ${{ matrix.os.version }}
 
+    env:
+      TEST_DOCKER_IMAGE: "centos:5"
+
     steps:
     - uses: actions/checkout@v3
 
@@ -49,6 +52,8 @@ jobs:
         sudo apt-get update
         sudo apt-get install -y busybox musl-tools scons
 
+        docker pull $TEST_DOCKER_IMAGE
+
     - name: List version info
       run: |
         echo "Installed version info:"
diff --git a/test/nss-isolated/run_test.sh b/test/nss-isolated/run_test.sh
index 443122c..8faec6e 100755
--- a/test/nss-isolated/run_test.sh
+++ b/test/nss-isolated/run_test.sh
@@ -27,9 +27,8 @@ $outfile
 # Run it under Docker
 if [ -n "$TEST_DOCKER_IMAGE" ]; then
     echo -e "\nRunning staticx executable under $TEST_DOCKER_IMAGE"
-    docker run --rm -it \
-        -v "$(pwd):$(pwd):ro" -w $(pwd) \
-        -v "$(realpath ./bad_nsswitch.conf):/etc/nsswitch.conf:ro" \
-        $TEST_DOCKER_IMAGE \
+
+    scuba --image $TEST_DOCKER_IMAGE \
+        --docker-arg="-v $(realpath ./bad_nsswitch.conf):/etc/nsswitch.conf:ro" \
         $outfile
 fi
diff --git a/test/pyinstall/run_test.sh b/test/pyinstall/run_test.sh
index 067cceb..88509d3 100755
--- a/test/pyinstall/run_test.sh
+++ b/test/pyinstall/run_test.sh
@@ -33,15 +33,10 @@ $outfile
 # Run it under an old distro
 if [ -n "$TEST_DOCKER_IMAGE" ]; then
     echo -e "\nRunning staticx executable under $TEST_DOCKER_IMAGE"
-    docker run --rm -it \
-        -v "$(pwd):$(pwd):ro" -w $(pwd) \
-        $TEST_DOCKER_IMAGE \
-        $outfile
+    scuba --image $TEST_DOCKER_IMAGE $outfile
 
     echo -e "\nRunning staticx executable under $TEST_DOCKER_IMAGE with broken NSS"
-    docker run --rm -it \
-        -v "$(pwd):$(pwd):ro" -w $(pwd) \
-        -v "$(realpath ./bad_nsswitch.conf):/etc/nsswitch.conf:ro" \
-        $TEST_DOCKER_IMAGE \
+    scuba --image $TEST_DOCKER_IMAGE \
+        --docker-arg="-v $(realpath ./bad_nsswitch.conf):/etc/nsswitch.conf:ro" \
         $outfile
 fi