Dockerfile

# Multi-stage build for AWS Lambda Rust deployment

# Build stage with Cargo Lambda pre-installed
FROM --platform=$BUILDPLATFORM ghcr.io/cargo-lambda/cargo-lambda:latest AS build
ARG TARGETPLATFORM

WORKDIR /build

# Copy only the files needed for build first (better caching)
COPY Cargo.toml Cargo.lock ./
COPY .cargo ./.cargo
COPY src ./src

# Determine the target architecture and build
RUN case ${TARGETPLATFORM:-linux/amd64} in \
  "linux/amd64") RUST_ARCH=x86_64-unknown-linux-gnu ;; \
  "linux/arm64") RUST_ARCH=aarch64-unknown-linux-gnu ;; \
  *) RUST_ARCH=x86_64-unknown-linux-gnu ;; \
  esac \
  && cargo lambda build --release --target ${RUST_ARCH}

# Runtime stage using AWS Lambda provided runtime
FROM public.ecr.aws/lambda/provided:al2023 AS runtime

# Copy the bootstrap file (Lambda expects this exact name)
COPY --from=build /build/target/lambda/community-liquidator-rs/bootstrap ${LAMBDA_RUNTIME_DIR}/bootstrap

# Optional: Copy any additional files needed at runtime
# COPY config ./config

# Set the handler name (matches the Lambda function handler)
CMD ["function.handler"]