diff --git a/cli50/__main__.py b/cli50/__main__.py
index 8d3d4d4..7659632 100644
--- a/cli50/__main__.py
+++ b/cli50/__main__.py
@@ -213,6 +213,7 @@ def main():
                "--security-opt", "seccomp=unconfined",  # https://stackoverflow.com/q/35860527#comment62818827_35860527, https://github.com/apple/swift-docker/issues/9#issuecomment-328218803
                "--tty",
                "--volume", directory + ":" + workdir,
+               "--volume", "/var/run/docker.sock:/var/run/docker-host.sock",  # https://github.com/devcontainers/features/blob/main/src/docker-outside-of-docker/devcontainer-feature.json
                "--workdir", workdir]
 
     # Check for locale
@@ -259,6 +260,13 @@ def main():
                                             ["--publish-all"] +
                                             [f"{IMAGE}:{args['tag']}"] + cmd).decode("utf-8").rstrip()
 
+        # Start Docker-outside-of-Docker (if supported by TAG)
+        # a la https://github.com/devcontainers/features/blob/main/src/docker-outside-of-docker/install.sh
+        try:
+            subprocess.check_output(["docker", "exec", container, "sudo", "/etc/init.d/docker", "start"])
+        except subprocess.CalledProcessError:
+            pass
+
         # List port mappings
         print(ports(container))
 
diff --git a/setup.py b/setup.py
index f3abffc..55facbb 100644
--- a/setup.py
+++ b/setup.py
@@ -24,6 +24,6 @@
         "console_scripts": ["cli50=cli50.__main__:main"]
     },
     url="https://github.com/cs50/cli50",
-    version="7.4.1",
+    version="7.5.0",
     include_package_data=True
 )