diff --git a/Dockerfile.test b/Dockerfile.test
index f95ab86..95b9cb2 100644
--- a/Dockerfile.test
+++ b/Dockerfile.test
@@ -2,6 +2,18 @@ FROM python:3.13-slim
 
 WORKDIR /workspace
 
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        ca-certificates \
+        curl \
+        gzip \
+        hashcat \
+        ocl-icd-libopencl1 \
+        pocl-opencl-icd \
+        p7zip-full \
+        transmission-cli \
+    && rm -rf /var/lib/apt/lists/*
+
 RUN python -m pip install -q uv
 
 COPY . /workspace
diff --git a/README.md b/README.md
index 21e3f3b..8adb1a6 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,12 @@ cd hashcat/
 make
 make install
 ```
+
+### External Dependencies
+These are required for certain download/extraction flows:
+
+- `7z`/`7za` (p7zip) — used to extract `.7z` archives.
+- `transmission-cli` — used to download Weakpass torrents.
 ### Download hate_crack
 ```git clone --recurse-submodules https://github.com/trustedsec/hate_crack.git```
 * Customize binary and wordlist paths in "config.json"
diff --git a/tests/test_docker_script_install.py b/tests/test_docker_script_install.py
index 36ec926..6b3516c 100644
--- a/tests/test_docker_script_install.py
+++ b/tests/test_docker_script_install.py
@@ -6,14 +6,16 @@ from pathlib import Path
 import pytest
 
 
-@pytest.mark.skipif(
-    os.environ.get("HATE_CRACK_RUN_DOCKER_TESTS") != "1",
-    reason="Set HATE_CRACK_RUN_DOCKER_TESTS=1 to run Docker-based tests.",
-)
-def test_docker_script_install_and_run():
+def _require_docker():
+    if os.environ.get("HATE_CRACK_RUN_DOCKER_TESTS") != "1":
+        pytest.skip("Set HATE_CRACK_RUN_DOCKER_TESTS=1 to run Docker-based tests.")
     if shutil.which("docker") is None:
         pytest.skip("docker not available")
 
+
+@pytest.fixture(scope="session")
+def docker_image():
+    _require_docker()
     repo_root = Path(__file__).resolve().parents[1]
     image_tag = "hate-crack-e2e"
 
@@ -31,18 +33,46 @@ def test_docker_script_install_and_run():
         "Docker build failed. "
         f"stdout={build.stdout} stderr={build.stderr}"
     )
+    return image_tag
 
+
+def _run_container(image_tag, command, timeout=180):
     try:
         run = subprocess.run(
-            ["docker", "run", "--rm", image_tag],
+            ["docker", "run", "--rm", image_tag, "bash", "-lc", command],
             capture_output=True,
             text=True,
-            timeout=120,
+            timeout=timeout,
         )
     except subprocess.TimeoutExpired as exc:
         pytest.fail(f"Docker run timed out after {exc.timeout}s")
+    return run
 
+
+def test_docker_script_install_and_run(docker_image):
+    run = _run_container(
+        docker_image,
+        "/root/.local/bin/hate_crack --help >/tmp/hc_help.txt && ./hate_crack.py --help >/tmp/hc_script_help.txt",
+        timeout=120,
+    )
     assert run.returncode == 0, (
         "Docker script install/run failed. "
         f"stdout={run.stdout} stderr={run.stderr}"
     )
+
+
+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; "
+        "echo 5f4dcc3b5aa765d61d8327deb882cf99 > /tmp/hash.txt; "
+        "hashcat -m 0 -a 0 --potfile-disable -o /tmp/out.txt /tmp/hash.txt /tmp/rockyou.small.txt --quiet; "
+        "grep -q ':password' /tmp/out.txt"
+    )
+    run = _run_container(docker_image, command, timeout=180)
+    assert run.returncode == 0, (
+        "Docker hashcat crack failed. "
+        f"stdout={run.stdout} stderr={run.stderr}"
+    )