fix: Prevent interactive prompts in Docker build

[AlexCuadron]

This PR fixes the Docker build issue where it gets stuck on "Delete 1061 entries? (yes/no) [yes] Aborted" by modifying the Dockerfile template to prevent interactive prompts:

1. Setting non-interactive environment variables in the Dockerfile:

   ENV DEBIAN_FRONTEND=noninteractive \
       DEBCONF_NONINTERACTIVE_SEEN=true

2. Configuring debconf to use non-interactive frontend:

   echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections

3. Adding force flags to cleanup commands:

   apt-get clean -y && \
   apt-get autoremove -y && \
   rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
   yes | /openhands/micromamba/bin/micromamba clean --all --force-pkgs-dirs

4. Setting micromamba to always accept prompts:

   CONDA_ALWAYS_YES=true /openhands/micromamba/bin/micromamba create -n openhands -y

5. Handling Playwright installation non-interactively:

   # Install playwright and its dependencies non-interactively
   DEBIAN_FRONTEND=noninteractive /openhands/micromamba/bin/micromamba run -n openhands poetry run pip install playwright && \
   DEBIAN_FRONTEND=noninteractive PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD=1 /openhands/micromamba/bin/micromamba run -n openhands poetry run playwright install --with-deps chromium && \
   yes | /openhands/micromamba/bin/micromamba run -n openhands poetry run playwright install chromium

These changes ensure that Docker builds run without requiring manual intervention while maintaining the same functionality.