Dockerfile

FROM lukemathwalker/cargo-chef:latest-rust-1.63.0 AS chef

# Let's switch our working directory to `app` (equivalent to `cd app`)
# The `app` folder will be created for us by Docker in case it does not
# exist already.
WORKDIR /app
# Install the required system dependencies for our linking configuration
RUN apt update && apt install lld clang -y
# Copy all files from our working environment to our Docker image
FROM chef as planner
COPY . .
# Compute a lock-like file for our project
RUN cargo chef prepare --recipe-path recipe.json

FROM chef as builder
COPY --from=planner /app/recipe.json recipe.json
# Build our project dependencies
RUN cargo chef cook --release --recipe-path recipe.json

COPY . .
ENV SQLX_OFFLINE true
# Let's build our binary!
# We'll use the release profile to make it faaaast
RUN cargo build --release --bin zero2prod

# Runtime stage
FROM debian:bullseye-slim as runtime

WORKDIR /app
# Install OpenSSL - it is dynamically linked by some of our dependencies
# Install ca-certificates - it is needed to verify TLS certificates
# when establishing HTTPS connections
RUN apt-get update -y \
    && apt-get install -y --no-install-recommends openssl ca-certificates \
    # Clean up
    && apt-get autoremove -y \
    && apt-get clean -y \
    && rm -rf /var/lib/apt/lists/*

# Copy the compiled binary from the builder environment
# to our runtime environment
COPY --from=builder /app/target/release/zero2prod zero2prod
COPY configuration configuration
ENV APP_ENVIRONMENT production
# When `docker run` is executed, launch the binary!
ENTRYPOINT ["./zero2prod"]