FROM rust:alpine3.20 AS builder
WORKDIR /app
# Install system dependencies
RUN apk add --no-cache musl-dev=1.2.5-r0
# Build application
COPY . .
RUN cargo build --release
# Create runtime image
FROM debian:bookworm-slim AS runtime
WORKDIR /usr/src/app
# Create non-root user
RUN useradd -m -s /bin/bash rainfrog
# Copy the binary from the builder image
COPY --from=builder /app/target/release/rainfrog /usr/local/bin/rainfrog
USER rainfrog
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
CMD pidof rainfrog || exit 1
# Command to construct the full connection URL using environment variables
CMD ["bash", "-c", "rainfrog --url postgres://$username:$password@$hostname:$db_port/$db_name"]