Dockerfile

FROM golang:1.21-bullseye

ENV DEBIAN_FRONTEND=noninteractive

# 1. Install System Dependencies
RUN apt-get update && apt-get install -y \
    xvfb x11-utils x11-xserver-utils xdotool matchbox-window-manager \
    ffmpeg curl gnupg libnss3 libatk1.0-0 libatk-bridge2.0-0 libcups2 \
    libdrm2 libxkbcommon0 libxcomposite1 libxdamage1 libxrandr2 libgbm1 \
    libasound2 fonts-liberation fonts-noto-color-emoji \
    && rm -rf /var/lib/apt/lists/*

# 2. Install Brave Browser
RUN curl -fsSLo /usr/share/keyrings/brave-browser-archive-keyring.gpg \
    https://brave-browser-apt-release.s3.brave.com/brave-browser-archive-keyring.gpg && \
    echo "deb [signed-by=/usr/share/keyrings/brave-browser-archive-keyring.gpg] https://brave-browser-apt-release.s3.brave.com/ stable main" \
    | tee /etc/apt/sources.list.d/brave-browser-release.list && \
    apt-get update && apt-get install -y brave-browser && \
    rm -rf /var/lib/apt/lists/*

# 3. Setup User
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH
WORKDIR $HOME/app

# 4. Copy Files and Build
COPY --chown=user:user go.mod .
# Copy main.go BEFORE 'go mod tidy' so it detects imports and creates go.sum
COPY --chown=user:user main.go .
RUN go mod tidy
RUN go build -o server main.go

# 5. Environment Config
ENV DISPLAY=:99
EXPOSE 7860

CMD ["./server"]