FROM alpine:latest

# Define a build argument that can be passed during build time
ARG APP_VERSION=1.0.0
ENV APP_VERSION=$APP_VERSION

# Define an environment variable that can be overridden at runtime
ENV DATABASE_URL="postgres://user:password@host:port/database"

WORKDIR /app

# Copy a custom entrypoint script (e.g., entrypoint.sh)
COPY entrypoint.sh /usr/local/bin/entrypoint.sh
RUN chmod +x /usr/local/bin/entrypoint.sh

# Set the custom script as the entrypoint
ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]

# Default command if no command is specified when running the container
CMD ["start-service"]