Multi-stage Docker builds (#2850)

This builds on @S7evinK's work to make multi-stage Docker builds. Now
that we can build SQLite without Cgo this should be much simpler and
should make Docker builds in CI significantly faster.

Co-authored-by: Till Faelligen <tfaelligen@gmail.com>
Co-authored-by: Till Faelligen <davidf@element.io>
Co-authored-by: Till Faelligen <2353100+S7evinK@users.noreply.github.com>

1 files changed, 122 insertions, 0 deletions

diff --git a/Dockerfile b/Dockerfile
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index 00000000..c32d693e
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,122 @@
+#syntax=docker/dockerfile:1.2
+
+#
+# base installs required dependencies and runs go mod download to cache dependencies
+#
+FROM --platform=${BUILDPLATFORM} docker.io/golang:1.19-alpine AS base
+RUN apk --update --no-cache add bash build-base curl
+
+#
+# build creates all needed binaries
+#
+FROM base AS build
+WORKDIR /src
+ARG TARGETOS
+ARG TARGETARCH
+ARG FLAGS
+RUN --mount=target=. \
+    --mount=type=cache,target=/root/.cache/go-build \
+    USERARCH=`go env GOARCH` \
+    GOARCH="$TARGETARCH" \
+    GOOS="linux" \
+    CGO_ENABLED=$([ "$TARGETARCH" = "$USERARCH" ] && echo "1" || echo "0") \
+    go build -v -ldflags="${FLAGS}" -trimpath -o /out/ ./cmd/...
+
+#
+# The dendrite base image; mainly creates a user and switches to it
+#
+FROM alpine:latest AS dendrite-base
+LABEL org.opencontainers.image.description="Next-generation Matrix homeserver written in Go"
+LABEL org.opencontainers.image.source="https://github.com/matrix-org/dendrite"
+LABEL org.opencontainers.image.licenses="Apache-2.0"
+LABEL org.opencontainers.image.documentation="https://matrix-org.github.io/dendrite/"
+LABEL org.opencontainers.image.vendor="The Matrix.org Foundation C.I.C."
+RUN addgroup dendrite && adduser dendrite -G dendrite -u 1337 -D
+USER dendrite
+WORKDIR /home/dendrite
+
+#
+# Builds the polylith image and only contains the polylith binary
+#
+FROM dendrite-base AS polylith
+LABEL org.opencontainers.image.title="Dendrite (Polylith)"
+
+COPY --from=build /out/dendrite-polylith-multi /usr/bin/
+
+ENTRYPOINT ["/usr/bin/dendrite-polylith-multi"]
+
+#
+# Builds the monolith image and contains all required binaries
+#
+FROM dendrite-base AS monolith
+LABEL org.opencontainers.image.title="Dendrite (Monolith)"
+
+COPY --from=build /out/create-account /usr/bin/create-account
+COPY --from=build /out/generate-config /usr/bin/generate-config
+COPY --from=build /out/generate-keys /usr/bin/generate-keys
+COPY --from=build /out/dendrite-monolith-server /usr/bin/dendrite-monolith-server
+
+ENTRYPOINT ["/usr/bin/dendrite-monolith-server"]
+EXPOSE 8008 8448
+
+#
+# Builds the Pinecone P2P demo image and contains all required binaries
+#
+FROM dendrite-base AS demo-pinecone
+LABEL org.opencontainers.image.title="Dendrite (Pinecone P2P Demo)"
+
+COPY --from=build /out/create-account /usr/bin/create-account
+COPY --from=build /out/generate-config /usr/bin/generate-config
+COPY --from=build /out/generate-keys /usr/bin/generate-keys
+COPY --from=build /out/dendrite-demo-pinecone /usr/bin/dendrite-demo-pinecone
+
+VOLUME /etc/dendrite
+WORKDIR /etc/dendrite
+
+ENTRYPOINT ["/usr/bin/dendrite-demo-pinecone"]
+EXPOSE 8008 8448
+
+#
+# Builds the Yggdrasil P2P demo image and contains all required binaries
+#
+FROM dendrite-base AS demo-yggdrasil
+LABEL org.opencontainers.image.title="Dendrite (Yggdrasil P2P Demo)"
+
+COPY --from=build /out/create-account /usr/bin/create-account
+COPY --from=build /out/generate-config /usr/bin/generate-config
+COPY --from=build /out/generate-keys /usr/bin/generate-keys
+COPY --from=build /out/dendrite-demo-yggdrasil /usr/bin/dendrite-demo-yggdrasil
+
+VOLUME /etc/dendrite
+WORKDIR /etc/dendrite
+
+ENTRYPOINT ["/usr/bin/dendrite-demo-yggdrasil"]
+EXPOSE 8008 8448
+
+#
+# Builds the Complement image, used for integration tests
+#
+FROM base AS complement
+LABEL org.opencontainers.image.title="Dendrite (Complement)"
+RUN apk add --no-cache sqlite openssl ca-certificates
+
+COPY --from=build /out/generate-config /usr/bin/generate-config
+COPY --from=build /out/generate-keys /usr/bin/generate-keys
+COPY --from=build /out/dendrite-monolith-server /usr/bin/dendrite-monolith-server
+
+WORKDIR /dendrite
+RUN /usr/bin/generate-keys --private-key matrix_key.pem && \
+    mkdir /ca && \
+    openssl genrsa -out /ca/ca.key 2048 && \
+    openssl req -new -x509 -key /ca/ca.key -days 3650 -subj "/C=GB/ST=London/O=matrix.org/CN=Complement CA" -out /ca/ca.crt
+
+ENV SERVER_NAME=localhost
+ENV API=0
+EXPOSE 8008 8448
+
+# At runtime, generate TLS cert based on the CA now mounted at /ca
+# At runtime, replace the SERVER_NAME with what we are told
+CMD /usr/bin/generate-keys --server $SERVER_NAME --tls-cert server.crt --tls-key server.key --tls-authority-cert /ca/ca.crt --tls-authority-key /ca/ca.key && \
+    /usr/bin/generate-config -server $SERVER_NAME --ci > dendrite.yaml && \
+    cp /ca/ca.crt /usr/local/share/ca-certificates/ && update-ca-certificates && \
+    /usr/bin/dendrite-monolith-server --really-enable-open-registration --tls-cert server.crt --tls-key server.key --config dendrite.yaml -api=${API:-0}
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