Dockerfile

FROM alpine:3.20.2 AS builder
ARG BUSYBOX_VERSION=1.36.1

# Install all dependencies required for compiling busybox
RUN apk add gcc musl-dev make perl

# Download busybox sources
RUN wget https://busybox.net/downloads/busybox-${BUSYBOX_VERSION}.tar.bz2 \
  && tar xf busybox-${BUSYBOX_VERSION}.tar.bz2 \
  && mv /busybox-${BUSYBOX_VERSION} /busybox

WORKDIR /busybox

# Copy the busybox build config (limited to httpd)
COPY .config .

# Compile and install busybox
RUN make && make install

# Create a non-root user to own the files and run our server
RUN adduser -D static

# Switch to the scratch image
FROM scratch

EXPOSE 3555

# Copy over the user
COPY --from=builder /etc/passwd /etc/passwd

# Copy the busybox static binary
COPY --from=builder /busybox/_install/bin/busybox /

# Use our non-root user
USER static
WORKDIR /home/static

# Uploads a blank default httpd.conf
# This is only needed in order to set the `-c` argument in this base file
# and save the developer the need to override the CMD line in case they ever
# want to use a httpd.conf
COPY httpd.conf .

# Copy the static website
# Use the .dockerignore file to control what ends up inside the image!
COPY . .

# Run busybox httpd
CMD ["/busybox", "httpd", "-f", "-v", "-p", "3555", "-c", "httpd.conf"]