Dockerfiles to use Rust on AWS Lambda

Dockerfile

FROM rust:alpine AS builder

RUN apk add --no-cache musl-dev

WORKDIR /build
COPY . .
RUN cargo build --release

FROM alpine

WORKDIR /var/task
COPY --from=builder /build/target/release/lambda-rs bootstrap

ENTRYPOINT [ "/var/task/bootstrap" ]

Dockerfile.al2

FROM public.ecr.aws/amazonlinux/amazonlinux:latest AS builder

RUN yum install -y gcc
RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y

WORKDIR /build
COPY . .
RUN source $HOME/.cargo/env && cargo build --release

FROM public.ecr.aws/lambda/provided:latest

COPY --from=builder /build/target/release/lambda-rs ${LAMBDA_RUNTIME_DIR}/bootstrap

CMD [ "" ]

Dockerfile.bullseye

FROM rust:bullseye AS builder

WORKDIR /build
COPY . .
RUN cargo build --release

FROM debian:bullseye-slim

WORKDIR /var/task
COPY --from=builder /build/target/release/lambda-rs bootstrap

ENTRYPOINT [ "/var/task/bootstrap" ]