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# syntax=docker/dockerfile:1
FROM docker.io/rust:1.53-alpine AS builder
WORKDIR /usr/src/conduit
# Install required packages to build Conduit and it's dependencies
RUN apk add musl-dev
# == Build dependencies without our own code separately for caching ==
#
# Need a fake main.rs since Cargo refuses to build anything otherwise.
#
# See https://github.com/rust-lang/cargo/issues/2644 for a Cargo feature
# request that would allow just dependencies to be compiled, presumably
# regardless of whether source files are available.
RUN mkdir src && touch src/lib.rs && echo 'fn main() {}' > src/main.rs
COPY Cargo.toml Cargo.lock ./
RUN cargo build --release && rm -r src
# Copy over actual Conduit sources
COPY src src
# main.rs and lib.rs need their timestamp updated for this to work correctly since
# otherwise the build with the fake main.rs from above is newer than the
# source files (COPY preserves timestamps).
#
# Builds conduit and places the binary at /usr/src/conduit/target/release/conduit
RUN touch src/main.rs && touch src/lib.rs && cargo build --release
# ---------------------------------------------------------------------------------------------------------------
# Stuff below this line actually ends up in the resulting docker image
# ---------------------------------------------------------------------------------------------------------------
FROM docker.io/alpine:3.14 AS runner
# Conduit needs:
# ca-certificates: for https
# curl: for the container's healtcheck
# libgcc: Apparently this is needed, even if I (@jfowl) don't know exactly why. But whatever, it's not that big.
RUN apk add --no-cache \
ca-certificates \
curl \
libgcc
# Created directory for the database and media files
RUN mkdir -p /srv/conduit/.local/share/conduit
# Copy over the actual Conduit binary from the builder stage
COPY --from=builder /usr/src/conduit/target/release/conduit /srv/conduit/
# Note from @jfowl: I would like to remove this in the future and just have the Docker version be configured with envs.
ENV CONDUIT_CONFIG="/srv/conduit/conduit.toml"
# Not strictly needed, but documents the port.
EXPOSE 6167
WORKDIR /srv/conduit
ENTRYPOINT [ "/srv/conduit/conduit" ]