Dockerfile.for.compose.rest.gateway

# syntax=docker/dockerfile:1

ARG RUST_VERSION=1.81.0
ARG APP_NAME=drive-deposits-rest-gateway-server

################################################################################
# Create a stage for building the application.

FROM rust:${RUST_VERSION}-alpine AS build
ARG APP_NAME
# not used as we are using a bind mount with absolute path
WORKDIR /drive-deposits

# Install host build dependencies.
RUN apk add --no-cache clang lld musl-dev git

RUN apk add --no-cache protobuf-dev


# Build the application.
# Mounting for caching dependencies and build artifacts
RUN --mount=type=cache,target=/usr/local/cargo/registry \
    --mount=type=cache,target=/usr/local/cargo/git/db \
    --mount=type=cache,target=/tmp/cargo-target \
    --mount=type=bind,source=.,target=/tmp/build \
    set -x && \
    ls -la /drive-deposits && \
    cd /tmp/build && \
    mkdir -p /tmp/cargo-target && \
    CARGO_TARGET_DIR=/tmp/cargo-target cargo build --package $APP_NAME --locked --release && \
    echo "Contents of /tmp/cargo-target/release/ directory:" && \
    ls -la /tmp/cargo-target/release/ && \
    if [ -f /tmp/cargo-target/release/$APP_NAME ]; then \
        mkdir -p /bin/server && \
        cp /tmp/cargo-target/release/$APP_NAME /bin/server/$APP_NAME && \
        echo "Contents of /bin/server directory:" && \
        ls -la /bin/server; \
    else \
        echo "Binary $APP_NAME not found in /tmp/cargo-target/release/"; \
        exit 1; \
    fi

#################################################################################
# Create a new stage for running the application
# could use distroless
# FROM gcr.io/distroless/cc-debian11
# or slim
# FROM debian:buster-slim
# this is docker init by default
FROM alpine:3.18 AS final

WORKDIR /bin

# Create a non-privileged user that the app will run under.
# See https://docs.docker.com/go/dockerfile-user-best-practices/
ARG UID=10001
RUN adduser \
    --disabled-password \
    --gecos "" \
    --home "/nonexistent" \
    --shell "/sbin/nologin" \
    --no-create-home \
    --uid "${UID}" \
    appuser
USER appuser

WORKDIR /bin

COPY --from=build /bin/server/$APP_NAME .

RUN echo "Contents of workdir /bin directory for drive-deposits-rest-gateway-server in final:" && \
    ls -la /bin

EXPOSE 3000

ENV RUST_LOG="drive_deposits_rest_types=debug,drive_deposits_proto_grpc_types=debug,drive_deposits_rest_gateway_server=debug"

ENV GRPC_SERVER_ADDRESS="http://drive-deposits-grpc-server:50052"

CMD ["/bin/drive-deposits-rest-gateway-server"]