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Dockerfile
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# ================================
# Build image
# ================================
FROM swift:5.3-focal as build
# Install OS updates and, if needed, sqlite3
RUN export DEBIAN_FRONTEND=noninteractive DEBCONF_NONINTERACTIVE_SEEN=true \
&& apt-get -q update \
&& apt-get -q dist-upgrade -y \
&& rm -rf /var/lib/apt/lists/*
# Set up a build area
WORKDIR /build
# First just resolve dependencies.
# This creates a cached layer that can be reused
# as long as your Package.swift/Package.resolved
# files do not change.
COPY ./Package.* ./
RUN swift package resolve
# Copy entire repo into container
COPY . .
# Build everything, with optimizations and test discovery
RUN swift build --enable-test-discovery -c release
# Switch to the staging area
WORKDIR /staging
# Copy main executable to staging area
RUN cp "$(swift build --package-path /build -c release --show-bin-path)/Run" ./
# Uncomment the next line if you need to load resources from the `Public` directory.
# Ensure that by default, neither the directory nor any of its contents are writable.
RUN mv /build/Public ./Public && chmod -R a-w ./Public
RUN mv /build/Resources ./Resources && chmod -R a-w ./Resources
# ================================
# Run image
# ================================
FROM swift:5.3-focal-slim
# Make sure all system packages are up to date.
RUN export DEBIAN_FRONTEND=noninteractive DEBCONF_NONINTERACTIVE_SEEN=true && \
apt-get -q update && apt-get -q dist-upgrade -y && rm -r /var/lib/apt/lists/*
# Create a vapor user and group with /app as its home directory
RUN useradd --user-group --create-home --system --skel /dev/null --home-dir /app vapor
# Switch to the new home directory
WORKDIR /app
# Copy built executable and any staged resources from builder
COPY --from=build --chown=vapor:vapor /staging /app
# Ensure all further commands run as the vapor user
USER vapor:vapor
# Let Docker bind to port 8080
EXPOSE 8080
# Start the Vapor service when the image is run, default to listening on 8080 in production environment
ENTRYPOINT ["./Run"]
CMD ["serve", "--env", "production", "--hostname", "0.0.0.0", "--port", "8080"]