Dockerfile

# The new base image to contain common runtime dependencies
FROM alpine:edge AS base

RUN apk add --no-cache \
    libgomp

WORKDIR /app

# The first stage will install build dependencies on top of the
# runtime dependencies, and then compile
FROM base AS builder

RUN apk add --no-cache \
    gcc \
    make \
    musl-dev \
    curl-dev \
    libconfig-dev

COPY . .

RUN make

# The second stage will already contain all dependencies, just copy
# the compiled executables
FROM base

RUN apk add --no-cache \
    libcurl \
    libconfig \
    sed

COPY --from=builder /app/recipesAtHome /app/config.txt /app/

# backwards compatibility (from https://success.docker.com/article/use-a-script-to-initialize-stateful-container-data)
COPY entrypoint.sh /usr/local/bin/docker-entrypoint.sh
RUN ln -s /usr/local/bin/docker-entrypoint.sh / 

VOLUME [ "/config" ]

ENTRYPOINT [ "docker-entrypoint.sh" ]