diff --git a/tests/test_docker_script_install.py b/tests/test_docker_script_install.py
index 9c482ab..e59dc1e 100644
--- a/tests/test_docker_script_install.py
+++ b/tests/test_docker_script_install.py
@@ -1,6 +1,8 @@
 import os
 import shutil
 import subprocess
+import sys
+import uuid
 from pathlib import Path
 
 import pytest
@@ -17,12 +19,13 @@ def _require_docker():
 def docker_image():
     _require_docker()
     repo_root = Path(__file__).resolve().parents[1]
-    image_tag = "hate-crack-e2e"
-    dockerfile_path = repo_root / "Dockerfile.test"
+    # Use a unique tag per test run to avoid conflicts
+    image_tag = f"hate-crack-e2e-{uuid.uuid4().hex[:8]}"
 
+    dockerfile_path = str(repo_root / "Dockerfile.test")
     try:
         build = subprocess.run(
-            ["docker", "build", "-f", str(dockerfile_path), "-t", image_tag, str(repo_root)],
+            ["docker", "build", "-f", dockerfile_path, "-t", image_tag, str(repo_root)],
             capture_output=True,
             text=True,
             timeout=600,
@@ -34,7 +37,26 @@ def docker_image():
         "Docker build failed. "
         f"stdout={build.stdout} stderr={build.stderr}"
     )
-    return image_tag
+    
+    yield image_tag
+    
+    # Cleanup: remove the Docker image after tests complete
+    try:
+        result = subprocess.run(
+            ["docker", "image", "rm", image_tag],
+            capture_output=True,
+            text=True,
+            timeout=60,
+        )
+        if result.returncode != 0:
+            print(
+                f"Warning: Failed to remove Docker image {image_tag}. "
+                f"stderr={result.stderr}",
+                file=sys.stderr
+            )
+    except Exception as e:
+        # Don't fail the test if cleanup fails, but log the issue
+        print(f"Warning: Exception while removing Docker image {image_tag}: {e}", file=sys.stderr)
 
 
 def _run_container(image_tag, command, timeout=180):
@@ -65,11 +87,9 @@ def test_docker_script_install_and_run(docker_image):
 def test_docker_hashcat_cracks_simple_password(docker_image):
     command = (
         "set -euo pipefail; "
-        "curl -fsSL -o /tmp/rockyou.txt.gz https://weakpass.com/download/90/rockyou.txt.gz; "
-        "gzip -d /tmp/rockyou.txt.gz; "
-        "head -n 5000 /tmp/rockyou.txt > /tmp/rockyou.small.txt; "
+        "printf 'password\\nletmein\\n123456\\n' > /tmp/wordlist.txt; "
         "echo 5f4dcc3b5aa765d61d8327deb882cf99 > /tmp/hash.txt; "
-        "hashcat -m 0 -a 0 --potfile-disable -o /tmp/out.txt /tmp/hash.txt /tmp/rockyou.small.txt --quiet; "
+        "hashcat -m 0 -a 0 --potfile-disable -o /tmp/out.txt /tmp/hash.txt /tmp/wordlist.txt --quiet; "
         "grep -q ':password' /tmp/out.txt"
     )
     run = _run_container(docker_image, command, timeout=180)