Update puppeteer healthcheck Dockerfile to run as root for Docker socket access and enhance README with common error resolution steps.

Dockers/puppeteer-healthcheck/Dockerfile

@@ -29,7 +29,8 @@ RUN groupadd -g 999 docker || true && \
     useradd -r -g docker -u 999 healthcheck && \
     chown -R healthcheck:docker /app
 
-USER healthcheck
+# Don't switch user - run as root for Docker socket access
+# USER healthcheck
 
 # Run the healthcheck script
 CMD ["python", "healthcheck.py"]

Dockers/puppeteer-healthcheck/README.md

@@ -110,6 +110,24 @@ If you see "Permission denied" errors when accessing the Docker socket:
    docker run --user root ...
    ```
 
+### Common Error: "Connection aborted. PermissionError(13, 'Permission denied')"
+
+This error occurs when the container cannot access the Docker socket. To fix:
+
+1. **Mount the Docker socket**:
+
+   ```bash
+   -v /var/run/docker.sock:/var/run/docker.sock:ro
+   ```
+
+2. **Add the container to the docker group**:
+
+   ```bash
+   --group-add $(getent group docker | cut -d: -f3)
+   ```
+
+3. **Use the provided docker-compose.yml** which includes all necessary configurations.
+
 ### Container not found
 
 - Ensure the `TARGET_CONTAINER` environment variable matches the exact name of your puppeteer-api container