Dockerfile

FROM ubuntu:22.04

# Install dependencies including network diagnostic tools
RUN apt-get update && apt-get install -y \
    curl \
    ca-certificates \
    iproute2 \
    net-tools \
    iputils-ping \
    conntrack \
    iptables \
    tcpdump \
    && rm -rf /var/lib/apt/lists/*

# Build arguments
ARG DEVICELAB_URL
ARG TEST_NODE_PORT=4723

# Set environment variables
ENV DEVICELAB_URL=${DEVICELAB_URL}
ENV TEST_NODE_PORT=${TEST_NODE_PORT}
ENV NETWORK_MODE=host

# Configure sysctl settings for better network performance
# These will be applied if the container has the necessary privileges
RUN echo "net.core.rmem_default=1048576" >> /etc/sysctl.d/99-webrtc.conf && \
    echo "net.core.wmem_default=1048576" >> /etc/sysctl.d/99-webrtc.conf && \
    echo "net.core.rmem_max=2097152" >> /etc/sysctl.d/99-webrtc.conf && \
    echo "net.core.wmem_max=2097152" >> /etc/sysctl.d/99-webrtc.conf && \
    echo "net.core.netdev_max_backlog=5000" >> /etc/sysctl.d/99-webrtc.conf && \
    echo "net.ipv4.udp_rmem_min=8192" >> /etc/sysctl.d/99-webrtc.conf && \
    echo "net.ipv4.udp_wmem_min=8192" >> /etc/sysctl.d/99-webrtc.conf && \
    echo "net.ipv4.tcp_mtu_probing=1" >> /etc/sysctl.d/99-webrtc.conf && \
    echo "net.netfilter.nf_conntrack_udp_timeout=300" >> /etc/sysctl.d/99-webrtc.conf && \
    echo "net.netfilter.nf_conntrack_udp_timeout_stream=300" >> /etc/sysctl.d/99-webrtc.conf && \
    echo "net.netfilter.nf_conntrack_max=65536" >> /etc/sysctl.d/99-webrtc.conf

# Create directory structure
RUN mkdir -p /root/Downloads
WORKDIR /root

# Copy APK file
COPY app-release.apk /root/Downloads/app-release.apk

# Copy entrypoint script
COPY entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh

# Expose test node port
EXPOSE ${TEST_NODE_PORT}

# Start DeviceLab test node
ENTRYPOINT ["/entrypoint.sh"]