diff --git a/.travis.yml b/.travis.yml
index 080c1ad..124055f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,20 @@ install:
 services:
   - docker
 
+env:
+  - NAME='python2.7' BUILD_PATH='python2.7' TEST_STR1='Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container (default)' DOCKERFILE='python2.7.dockerfile' TEST_STR2='Hello World from Nginx uWSGI Python 2.7 app in a Docker container' RUN_TESTS='1'
+  - NAME='python2.7-alpine3.7' BUILD_PATH='python2.7-alpine3.7' TEST_STR1='Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container in Alpine (default)' DOCKERFILE='python2.7-alpine3.7.dockerfile' TEST_STR2='Hello World from Nginx uWSGI Python 2.7 app in a Docker container' RUN_TESTS='1'
+  - NAME='python2.7-alpine3.8' BUILD_PATH='python2.7-alpine3.8' TEST_STR1='Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container in Alpine (default)' DOCKERFILE='python2.7-alpine3.8.dockerfile' TEST_STR2='Hello World from Nginx uWSGI Python 2.7 app in a Docker container' RUN_TESTS='1'
+  - NAME='python3.5' BUILD_PATH='python3.5' TEST_STR1='Hello World from a default Nginx uWSGI Python 3.5 app in a Docker container (default)' DOCKERFILE='python3.5.dockerfile' TEST_STR2='Hello World from Nginx uWSGI Python 3.5 app in a Docker container' RUN_TESTS='1'
+  - NAME='python3.6' BUILD_PATH='python3.6' TEST_STR1='Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container (default)' DOCKERFILE='python3.6.dockerfile' TEST_STR2='Hello World from Nginx uWSGI Python 3.6 app in a Docker container' RUN_TESTS='1'
+  - NAME='python3.6-alpine3.7' BUILD_PATH='python3.6-alpine3.7' TEST_STR1='Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container in Alpine (default)' DOCKERFILE='python3.6-alpine3.7.dockerfile' TEST_STR2='Hello World from Nginx uWSGI Python 3.6 app in a Docker container' RUN_TESTS='1'
+  - NAME='python3.6-alpine3.8' BUILD_PATH='python3.6-alpine3.8' TEST_STR1='Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container in Alpine (default)' DOCKERFILE='python3.6-alpine3.8.dockerfile' TEST_STR2='Hello World from Nginx uWSGI Python 3.6 app in a Docker container' RUN_TESTS='1'
+  - NAME='python3.7' BUILD_PATH='python3.7' TEST_STR1='Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container (default)' DOCKERFILE='python3.7.dockerfile' TEST_STR2='Hello World from Nginx uWSGI Python 3.7 app in a Docker container' RUN_TESTS='1'
+  - NAME='latest' BUILD_PATH='python3.7' TEST_STR1='Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container (default)' DOCKERFILE='latest.dockerfile' TEST_STR2='Hello World from Nginx uWSGI Python 3.7 app in a Docker container' RUN_TESTS='1'
+  - NAME='python3.7-alpine3.7' BUILD_PATH='python3.7-alpine3.7' TEST_STR1='Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container in Alpine (default)' DOCKERFILE='python3.7-alpine3.7.dockerfile' TEST_STR2='Hello World from Nginx uWSGI Python 3.7 app in a Docker container' RUN_TESTS=''
+  - NAME='python3.7-alpine3.8' BUILD_PATH='python3.7-alpine3.8' TEST_STR1='Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container in Alpine (default)' DOCKERFILE='python3.7-alpine3.8.dockerfile' TEST_STR2='Hello World from Nginx uWSGI Python 3.7 app in a Docker container' RUN_TESTS=''
+
+
 script:
   - bash scripts/test.sh
 
diff --git a/scripts/test-all.sh b/scripts/test-all.sh
new file mode 100644
index 0000000..20b8fd4
--- /dev/null
+++ b/scripts/test-all.sh
@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+set -e
+
+python scripts/test_all.py
diff --git a/scripts/test.sh b/scripts/test.sh
index dfcc3a9..328219f 100644
--- a/scripts/test.sh
+++ b/scripts/test.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
 set -e
 
-docker-compose -f docker-compose.build.yml build
+docker-compose -f docker-compose.build.yml build $NAME
 pytest tests
diff --git a/scripts/test_all.py b/scripts/test_all.py
new file mode 100644
index 0000000..60637ab
--- /dev/null
+++ b/scripts/test_all.py
@@ -0,0 +1,124 @@
+import os
+import subprocess
+import sys
+
+versions = [
+    {
+        "NAME": "python2.7",
+        "BUILD_PATH": "python2.7",
+        "TEST_STR1": "Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container (default)",
+        "DOCKERFILE": "python2.7.dockerfile",
+        "TEST_STR2": "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
+        "RUN_TESTS": "1",
+    },
+    {
+        "NAME": "python2.7-alpine3.7",
+        "BUILD_PATH": "python2.7-alpine3.7",
+        "TEST_STR1": "Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container in Alpine (default)",
+        "DOCKERFILE": "python2.7-alpine3.7.dockerfile",
+        "TEST_STR2": "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
+        "RUN_TESTS": "1",
+    },
+    {
+        "NAME": "python2.7-alpine3.8",
+        "BUILD_PATH": "python2.7-alpine3.8",
+        "TEST_STR1": "Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container in Alpine (default)",
+        "DOCKERFILE": "python2.7-alpine3.8.dockerfile",
+        "TEST_STR2": "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
+        "RUN_TESTS": "1",
+    },
+    {
+        "NAME": "python3.5",
+        "BUILD_PATH": "python3.5",
+        "TEST_STR1": "Hello World from a default Nginx uWSGI Python 3.5 app in a Docker container (default)",
+        "DOCKERFILE": "python3.5.dockerfile",
+        "TEST_STR2": "Hello World from Nginx uWSGI Python 3.5 app in a Docker container",
+        "RUN_TESTS": "1",
+    },
+    {
+        "NAME": "python3.6",
+        "BUILD_PATH": "python3.6",
+        "TEST_STR1": "Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container (default)",
+        "DOCKERFILE": "python3.6.dockerfile",
+        "TEST_STR2": "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
+        "RUN_TESTS": "1",
+    },
+    {
+        "NAME": "python3.6-alpine3.7",
+        "BUILD_PATH": "python3.6-alpine3.7",
+        "TEST_STR1": "Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container in Alpine (default)",
+        "DOCKERFILE": "python3.6-alpine3.7.dockerfile",
+        "TEST_STR2": "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
+        "RUN_TESTS": "1",
+    },
+    {
+        "NAME": "python3.6-alpine3.8",
+        "BUILD_PATH": "python3.6-alpine3.8",
+        "TEST_STR1": "Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container in Alpine (default)",
+        "DOCKERFILE": "python3.6-alpine3.8.dockerfile",
+        "TEST_STR2": "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
+        "RUN_TESTS": "1",
+    },
+    {
+        "NAME": "python3.7",
+        "BUILD_PATH": "python3.7",
+        "TEST_STR1": "Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container (default)",
+        "DOCKERFILE": "python3.7.dockerfile",
+        "TEST_STR2": "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
+        "RUN_TESTS": "1",
+    },
+    {
+        "NAME": "latest",
+        "BUILD_PATH": "python3.7",
+        "TEST_STR1": "Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container (default)",
+        "DOCKERFILE": "latest.dockerfile",
+        "TEST_STR2": "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
+        "RUN_TESTS": "1",
+    },
+    {
+        "NAME": "python3.7-alpine3.7",
+        "BUILD_PATH": "python3.7-alpine3.7",
+        "TEST_STR1": "Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container in Alpine (default)",
+        "DOCKERFILE": "python3.7-alpine3.7.dockerfile",
+        "TEST_STR2": "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
+        "RUN_TESTS": "",
+    },
+    {
+        "NAME": "python3.7-alpine3.8",
+        "BUILD_PATH": "python3.7-alpine3.8",
+        "TEST_STR1": "Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container in Alpine (default)",
+        "DOCKERFILE": "python3.7-alpine3.8.dockerfile",
+        "TEST_STR2": "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
+        "RUN_TESTS": "",
+    },
+]
+
+
+def test_tag(*, env: dict):
+    use_env = {**os.environ, **env}
+    return_code = subprocess.call(["bash", "scripts/test.sh"], env=use_env)
+    if return_code != 0:
+        sys.exit(return_code)
+
+
+def print_version_envs():
+    env_lines = []
+    for version in versions:
+        env_vars = []
+        for key, value in version.items():
+            env_vars.append(f"{key}='{value}'")
+        env_lines.append(" ".join(env_vars))
+    for line in env_lines:
+        print(line)
+
+
+def main():
+    for env in versions:
+        test_tag(env=env)
+
+
+if __name__ == "__main__":
+    if len(sys.argv) > 1:
+        print_version_envs()
+    else:
+        main()
diff --git a/tests/test_01_main/test_defaults.py b/tests/test_01_main/test_defaults.py
index f37eaf1..e3eef70 100644
--- a/tests/test_01_main/test_defaults.py
+++ b/tests/test_01_main/test_defaults.py
@@ -1,7 +1,7 @@
+import os
 import time
 
 import docker
-import pytest
 import requests
 from requests import Response
 
@@ -52,62 +52,23 @@ def verify_container(container, response_text):
     assert response.text == response_text
 
 
-@pytest.mark.parametrize(
-    "image,response_text",
-    [
-        (
-            "tiangolo/uwsgi-nginx:python2.7",
-            "Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container (default)",
-        ),
-        (
-            "tiangolo/uwsgi-nginx:python2.7-alpine3.7",
-            "Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container in Alpine (default)",
-        ),
-        (
-            "tiangolo/uwsgi-nginx:python2.7-alpine3.8",
-            "Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container in Alpine (default)",
-        ),
-        (
-            "tiangolo/uwsgi-nginx:python3.5",
-            "Hello World from a default Nginx uWSGI Python 3.5 app in a Docker container (default)",
-        ),
-        (
-            "tiangolo/uwsgi-nginx:python3.6",
-            "Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container (default)",
-        ),
-        (
-            "tiangolo/uwsgi-nginx:python3.6-alpine3.7",
-            "Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container in Alpine (default)",
-        ),
-        (
-            "tiangolo/uwsgi-nginx:python3.6-alpine3.8",
-            "Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container in Alpine (default)",
-        ),
-        (
-            "tiangolo/uwsgi-nginx:python3.7",
-            "Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container (default)",
-        ),
-        # (
-        #     "tiangolo/uwsgi-nginx:python3.7-alpine3.7",
-        #     "Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container in Alpine (default)",
-        # ),
-        # (
-        #     "tiangolo/uwsgi-nginx:python3.7-alpine3.8",
-        #     "Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container in Alpine (default)",
-        # ),
-    ],
-)
-def test_defaults(image, response_text):
+def test_defaults():
+    if not os.getenv("RUN_TESTS"):
+        return
+    name = os.getenv("NAME")
+    image = f"tiangolo/uwsgi-nginx:{name}"
+    response_text = os.getenv("TEST_STR1")
+    sleep_time = int(os.getenv("SLEEP_TIME", 3))
     remove_previous_container(client)
     container = client.containers.run(
         image, name=CONTAINER_NAME, ports={"80": "8000"}, detach=True
     )
-    time.sleep(3)
+    time.sleep(sleep_time)
     verify_container(container, response_text)
     container.stop()
     # Test that everything works after restarting too
     container.start()
-    time.sleep(3)
+    time.sleep(sleep_time)
     verify_container(container, response_text)
     container.stop()
     container.remove()
diff --git a/tests/test_01_main/test_env_vars_1.py b/tests/test_01_main/test_env_vars_1.py
index ae0e454..35e9705 100644
--- a/tests/test_01_main/test_env_vars_1.py
+++ b/tests/test_01_main/test_env_vars_1.py
@@ -1,7 +1,7 @@
+import os
 import time
 
 import docker
-import pytest
 import requests
 
 from ..utils import (
@@ -53,52 +53,13 @@ def verify_container(container, response_text):
     assert response.text == response_text
 
 
-@pytest.mark.parametrize(
-    "image,response_text",
-    [
-        (
-            "tiangolo/uwsgi-nginx:python2.7",
-            "Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container (default)",
-        ),
-        (
-            "tiangolo/uwsgi-nginx:python2.7-alpine3.7",
-            "Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container in Alpine (default)",
-        ),
-        (
-            "tiangolo/uwsgi-nginx:python2.7-alpine3.8",
-            "Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container in Alpine (default)",
-        ),
-        (
-            "tiangolo/uwsgi-nginx:python3.5",
-            "Hello World from a default Nginx uWSGI Python 3.5 app in a Docker container (default)",
-        ),
-        (
-            "tiangolo/uwsgi-nginx:python3.6",
-            "Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container (default)",
-        ),
-        (
-            "tiangolo/uwsgi-nginx:python3.6-alpine3.7",
-            "Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container in Alpine (default)",
-        ),
-        (
-            "tiangolo/uwsgi-nginx:python3.6-alpine3.8",
-            "Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container in Alpine (default)",
-        ),
-        (
-            "tiangolo/uwsgi-nginx:python3.7",
-            "Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container (default)",
-        ),
-        # (
-        #     "tiangolo/uwsgi-nginx:python3.7-alpine3.7",
-        #     "Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container in Alpine (default)",
-        # ),
-        # (
-        #     "tiangolo/uwsgi-nginx:python3.7-alpine3.8",
-        #     "Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container in Alpine (default)",
-        # ),
-    ],
-)
-def test_env_vars_1(image, response_text):
+def test_env_vars_1():
+    if not os.getenv("RUN_TESTS"):
+        return
+    name = os.getenv("NAME")
+    image = f"tiangolo/uwsgi-nginx:{name}"
+    response_text = os.getenv("TEST_STR1")
+    sleep_time = int(os.getenv("SLEEP_TIME", 3))
     remove_previous_container(client)
     container = client.containers.run(
         image,
@@ -114,12 +75,12 @@ def test_env_vars_1(image, response_text):
         ports={"80": "8000"},
         detach=True,
     )
-    time.sleep(3)
+    time.sleep(sleep_time)
     verify_container(container, response_text)
     container.stop()
     # Test that everything works after restarting too
     container.start()
-    time.sleep(3)
+    time.sleep(sleep_time)
     verify_container(container, response_text)
     container.stop()
     container.remove()
diff --git a/tests/test_02_app/test_app_and_env_vars.py b/tests/test_02_app/test_app_and_env_vars.py
index de5598e..473c0d1 100644
--- a/tests/test_02_app/test_app_and_env_vars.py
+++ b/tests/test_02_app/test_app_and_env_vars.py
@@ -1,8 +1,8 @@
+import os
 import time
 from pathlib import Path, PurePath
 
 import docker
-import pytest
 import requests
 
 from ..utils import (
@@ -52,56 +52,12 @@ def verify_container(container, response_text):
     assert response.text == response_text
 
 
-@pytest.mark.parametrize(
-    "dockerfile,response_text",
-    [
-        (
-            "python2.7.dockerfile",
-            "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
-        ),
-        (
-            "python2.7-alpine3.7.dockerfile",
-            "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
-        ),
-        (
-            "python2.7-alpine3.8.dockerfile",
-            "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
-        ),
-        (
-            "python3.5.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.5 app in a Docker container",
-        ),
-        (
-            "python3.6.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
-        ),
-        (
-            "python3.6-alpine3.7.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
-        ),
-        (
-            "python3.6-alpine3.8.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
-        ),
-        (
-            "python3.7.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
-        ),
-        (
-            "latest.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
-        ),
-        # (
-        #     "python3.7-alpine3.7.dockerfile",
-        #     "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
-        # ),
-        # (
-        #     "python3.7-alpine3.8.dockerfile",
-        #     "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
-        # ),
-    ],
-)
-def test_env_vars_1(dockerfile, response_text):
+def test_env_vars_1():
+    if not os.getenv("RUN_TESTS"):
+        return
+    dockerfile = os.getenv("DOCKERFILE")
+    response_text = os.getenv("TEST_STR2")
+    sleep_time = int(os.getenv("SLEEP_TIME", 3))
     remove_previous_container(client)
     tag = "uwsgi-nginx-testimage"
     test_path: PurePath = Path(__file__)
@@ -117,12 +73,12 @@ def test_env_vars_1(dockerfile, response_text):
         ports={"8080": "8000"},
         detach=True,
     )
-    time.sleep(3)
+    time.sleep(sleep_time)
     verify_container(container, response_text)
     container.stop()
     # Test that everything works after restarting too
     container.start()
-    time.sleep(3)
+    time.sleep(sleep_time)
     verify_container(container, response_text)
     container.stop()
     container.remove()
diff --git a/tests/test_02_app/test_custom_nginx_app.py b/tests/test_02_app/test_custom_nginx_app.py
index 5840ff0..906cf36 100644
--- a/tests/test_02_app/test_custom_nginx_app.py
+++ b/tests/test_02_app/test_custom_nginx_app.py
@@ -1,8 +1,8 @@
+import os
 import time
 from pathlib import Path, PurePath
 
 import docker
-import pytest
 import requests
 
 from ..utils import (
@@ -53,56 +53,12 @@ def verify_container(container, response_text):
     assert response.text == response_text
 
 
-@pytest.mark.parametrize(
-    "dockerfile,response_text",
-    [
-        (
-            "python2.7.dockerfile",
-            "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
-        ),
-        (
-            "python2.7-alpine3.7.dockerfile",
-            "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
-        ),
-        (
-            "python2.7-alpine3.8.dockerfile",
-            "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
-        ),
-        (
-            "python3.5.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.5 app in a Docker container",
-        ),
-        (
-            "python3.6.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
-        ),
-        (
-            "python3.6-alpine3.7.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
-        ),
-        (
-            "python3.6-alpine3.8.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
-        ),
-        (
-            "python3.7.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
-        ),
-        (
-            "latest.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
-        ),
-        # (
-        #     "python3.7-alpine3.7.dockerfile",
-        #     "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
-        # ),
-        # (
-        #     "python3.7-alpine3.8.dockerfile",
-        #     "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
-        # ),
-    ],
-)
-def test_env_vars_1(dockerfile, response_text):
+def test_env_vars_1():
+    if not os.getenv("RUN_TESTS"):
+        return
+    dockerfile = os.getenv("DOCKERFILE")
+    response_text = os.getenv("TEST_STR2")
+    sleep_time = int(os.getenv("SLEEP_TIME", 3))
     remove_previous_container(client)
     tag = "uwsgi-nginx-testimage"
     test_path: PurePath = Path(__file__)
@@ -111,12 +67,12 @@ def test_env_vars_1(dockerfile, response_text):
     container = client.containers.run(
         tag, name=CONTAINER_NAME, ports={"8080": "8080"}, detach=True
     )
-    time.sleep(3)
+    time.sleep(sleep_time)
     verify_container(container, response_text)
     container.stop()
     # Test that everything works after restarting too
     container.start()
-    time.sleep(3)
+    time.sleep(sleep_time)
     verify_container(container, response_text)
     container.stop()
     container.remove()
diff --git a/tests/test_02_app/test_simple_app.py b/tests/test_02_app/test_simple_app.py
index cd4c69d..5044176 100644
--- a/tests/test_02_app/test_simple_app.py
+++ b/tests/test_02_app/test_simple_app.py
@@ -1,8 +1,8 @@
+import os
 import time
 from pathlib import Path, PurePath
 
 import docker
-import pytest
 import requests
 
 from ..utils import (
@@ -52,56 +52,12 @@ def verify_container(container, response_text):
     assert response.text == response_text
 
 
-@pytest.mark.parametrize(
-    "dockerfile,response_text",
-    [
-        (
-            "python2.7.dockerfile",
-            "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
-        ),
-        (
-            "python2.7-alpine3.7.dockerfile",
-            "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
-        ),
-        (
-            "python2.7-alpine3.8.dockerfile",
-            "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
-        ),
-        (
-            "python3.5.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.5 app in a Docker container",
-        ),
-        (
-            "python3.6.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
-        ),
-        (
-            "python3.6-alpine3.7.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
-        ),
-        (
-            "python3.6-alpine3.8.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
-        ),
-        (
-            "python3.7.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
-        ),
-        (
-            "latest.dockerfile",
-            "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
-        ),
-        # (
-        #     "python3.7-alpine3.7.dockerfile",
-        #     "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
-        # ),
-        # (
-        #     "python3.7-alpine3.8.dockerfile",
-        #     "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
-        # ),
-    ],
-)
-def test_env_vars_1(dockerfile, response_text):
+def test_env_vars_1():
+    if not os.getenv("RUN_TESTS"):
+        return
+    dockerfile = os.getenv("DOCKERFILE")
+    response_text = os.getenv("TEST_STR2")
+    sleep_time = int(os.getenv("SLEEP_TIME", 3))
     remove_previous_container(client)
     tag = "uwsgi-nginx-testimage"
     test_path: PurePath = Path(__file__)
@@ -110,12 +66,12 @@ def test_env_vars_1(dockerfile, response_text):
     container = client.containers.run(
         tag, name=CONTAINER_NAME, ports={"80": "8000"}, detach=True
     )
-    time.sleep(3)
+    time.sleep(sleep_time)
     verify_container(container, response_text)
     container.stop()
     # Test that everything works after restarting too
     container.start()
-    time.sleep(3)
+    time.sleep(sleep_time)
     verify_container(container, response_text)
     container.stop()
     container.remove()