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Split Dockerfile: pre-built golangci-lint stage for faster CI #45

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sneak merged 1 commits from split-dockerfile-lint-stage into main 2026-03-15 18:56:25 +01:00
Conversation 0 Commits 1 Files Changed 2 +26 -6
2 changed files with 26 additions and 6 deletions
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30
Dockerfile
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@@ -1,16 +1,36 @@
# Lint stage — fast feedback on formatting and lint issues
# golangci/golangci-lint:v2.0.2 (2026-03-14)
FROM golangci/golangci-lint@sha256:d55581f7797e7a0877a7c3aaa399b01bdc57d2874d6412601a046cc4062cb62e AS lint-bin
FROM golangci/golangci-lint@sha256:d55581f7797e7a0877a7c3aaa399b01bdc57d2874d6412601a046cc4062cb62e AS lint
# golang:1.23 (2026-03-14)
FROM golang@sha256:60deed95d3888cc5e4d9ff8a10c54e5edc008c6ae3fba6187be6fb592e19e8c0 AS builder
COPY --from=lint-bin /usr/bin/golangci-lint /usr/local/bin/golangci-lint
WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
COPY . .
# Touch .pb.go so make does not try to regenerate via protoc (file is committed)
RUN touch mfer/mf.pb.go
RUN make check
RUN make fmt-check
RUN make lint
# Build stage — tests and compilation
# golang:1.23 (2026-03-14)
FROM golang@sha256:60deed95d3888cc5e4d9ff8a10c54e5edc008c6ae3fba6187be6fb592e19e8c0 AS builder
# Force BuildKit to run the lint stage by creating a stage dependency
COPY --from=lint /src/go.sum /dev/null
WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
COPY . .
# Touch .pb.go so make does not try to regenerate via protoc (file is committed)
RUN touch mfer/mf.pb.go
RUN make test
RUN cd cmd/mfer && go build -tags urfave_cli_no_docs -o /mfer .
FROM scratch

2
Makefile
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@@ -32,7 +32,7 @@ $(PROTOC_GEN_GO):
fixme:
@grep -nir fixme . | grep -v Makefile
check: test fmt-check
check: test lint fmt-check
fmt-check: mfer/mf.pb.go
sh -c 'test -z "$$(gofmt -l .)"'