FROM alpine:latest

# Install necessary tools
RUN apk add --no-cache git build-base

# Create output directory and set proper permissions FIRST
RUN mkdir -p /home/builder/output && \
    chmod 777 /home/builder/output

# Create builder user
RUN adduser -D builder && \
    chown -R builder:builder /home/builder

USER builder
WORKDIR /home/builder

COPY build.sh .
CMD ["/bin/sh", "build.sh"]