Dockerfile


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#syntax=docker/dockerfile:1.2

#
# base installs required dependencies and runs go mod download to cache dependencies
#
# Pinned to alpine3.18 until https://github.com/mattn/go-sqlite3/issues/1164 is solved
FROM --platform=${BUILDPLATFORM} docker.io/golang:1.21-alpine3.18 AS base
RUN apk --update --no-cache add bash build-base curl git

#
# build creates all needed binaries
#
FROM --platform=${BUILDPLATFORM} base AS build
WORKDIR /src
ARG TARGETOS
ARG TARGETARCH
RUN --mount=target=. \
    --mount=type=cache,target=/root/.cache/go-build \
    --mount=type=cache,target=/go/pkg/mod \
    USERARCH=`go env GOARCH` \
    GOARCH="$TARGETARCH" \
    GOOS="linux" \
    CGO_ENABLED=$([ "$TARGETARCH" = "$USERARCH" ] && echo "1" || echo "0") \
    go build -v -trimpath -o /out/ ./cmd/...


#
# Builds the Dendrite image containing all required binaries
#
FROM alpine:latest
RUN apk --update --no-cache add curl
LABEL org.opencontainers.image.title="Dendrite"
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."

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 /usr/bin/dendrite

VOLUME /etc/dendrite
WORKDIR /etc/dendrite

ENTRYPOINT ["/usr/bin/dendrite"]
EXPOSE 8008 8448