Pim van Pelt
a554cfc2ee
Rework the Dockerfile to produce a proper multi-arch manifest from a single `docker buildx build --platform linux/amd64,linux/arm64`. The builder stage runs on the host's native arch ($BUILDPLATFORM) and Go cross-compiles to each requested $TARGETARCH via the Makefile's build-$TARGETARCH targets — no qemu-emulated builder, no per-arch Dockerfile duplication. VERSION/COMMIT/DATE flow from --build-arg through to the -ldflags -X injection so images stamp the same metadata as `make build` on bare metal. docker-compose.yml gains Docker Compose "profiles" (collector, aggregator, frontend) and an `env_file: .env`, mirroring vpp-maglev's pattern. All three services ship from one multi-arch image and select their binary via `command:`. Collector uses network_mode: host so UDP from host nginx on 127.0.0.1 actually reaches it; aggregator/frontend bridge-network with published ports. .env.example documents every COLLECTOR_*, AGGREGATOR_*, FRONTEND_* env var with its default plus COMPOSE_PROFILES and notes for Docker-specific cases (service DNS names, AGGREGATOR_COLLECTORS spelling). .gitignore excludes /.env so local tunables stay local. Verified: `docker buildx build --platform linux/amd64,linux/arm64` goes through cleanly from one invocation; local --load build's four binaries report version 0.9.1 with the injected commit/date. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
65 lines
2.8 KiB
Docker
65 lines
2.8 KiB
Docker
# syntax=docker/dockerfile:1.6
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#
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# Multi-stage, multi-arch build for nginx-logtail.
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#
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# A single `docker buildx build --platform linux/amd64,linux/arm64`
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# produces a proper multi-arch manifest without a qemu-emulated builder:
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# the builder runs on the host's $BUILDPLATFORM and Go cross-compiles
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# to each requested $TARGETARCH via the Makefile's build-amd64 /
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# build-arm64 targets. Both BUILDPLATFORM and TARGETARCH are populated
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# automatically by buildx.
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#
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# One runtime image contains all four binaries; docker-compose.yml
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# picks which one each service runs via `command:`.
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#
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# Driven from the Makefile:
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# make docker # native arch, --load into local daemon
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# make docker-push # multi-arch manifest, pushed to the registry
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# =============================================================================
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# Builder — compiles all four binaries on the host's native arch.
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# =============================================================================
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FROM --platform=$BUILDPLATFORM golang:1.24-alpine AS builder
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# TARGETARCH (amd64, arm64, ...) is supplied by buildx; VERSION/COMMIT/DATE
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# come in as --build-arg from `make docker` / `make docker-push`.
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ARG TARGETARCH
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ARG VERSION=dev
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ARG COMMIT=unknown
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ARG DATE=unknown
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# make drives the build. git lets the Makefile stamp a commit hash via
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# `git rev-parse` when --build-arg COMMIT isn't supplied; when it is,
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# the command-line override below wins and git is only needed to avoid
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# the fallback branch warning.
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RUN apk add --no-cache make git
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WORKDIR /src
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# Cache Go modules so code-only rebuilds skip the download.
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COPY go.mod go.sum ./
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RUN go mod download
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COPY . .
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# Generated proto files are checked in, but `docker COPY` resets mtimes,
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# which can make `make` think they are stale relative to the .proto
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# source. Touch them so the regen rule is skipped.
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RUN touch proto/logtailpb/logtail.pb.go proto/logtailpb/logtail_grpc.pb.go
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# The Makefile's build-<arch> target sets GOOS=linux GOARCH=<arch>
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# CGO_ENABLED=0 and emits build/<arch>/<binary> with the usual -ldflags
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# version injection. Forwarding VERSION/COMMIT_HASH/DATE on the command
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# line stamps the values supplied by --build-arg into the binaries.
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RUN make VERSION=$VERSION COMMIT_HASH=$COMMIT DATE=$DATE build-$TARGETARCH
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# =============================================================================
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# Runtime — scratch, no OS, no shell. All four binaries.
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# =============================================================================
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FROM scratch
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ARG TARGETARCH
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COPY --from=builder /src/build/$TARGETARCH/collector /usr/local/bin/collector
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COPY --from=builder /src/build/$TARGETARCH/aggregator /usr/local/bin/aggregator
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COPY --from=builder /src/build/$TARGETARCH/frontend /usr/local/bin/frontend
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COPY --from=builder /src/build/$TARGETARCH/cli /usr/local/bin/cli
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