chore: add basic dev tools targets

Add go.mod, targets to build, test and lint.

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

Author: tonistiigi

.golangci.yml

@@ -0,0 +1,27 @@
+version: "2"
+
+run:
+  timeout: 10m
+
+formatters:
+  enable:
+    - gofmt
+    - goimports
+
+linters:
+  default: standard
+  enable:
+    - bodyclose
+    - errname
+    - forbidigo
+    - gocritic
+    - gosec
+    - importas
+    - makezero
+    - misspell
+    - noctx
+    - nolintlint
+    - revive
+    - unconvert
+    - unparam
+    - whitespace

Dockerfile

@@ -0,0 +1,31 @@
+#syntax=docker/dockerfile:1
+#check=error=true
+
+ARG GO_VERSION=1.26
+ARG XX_VERSION=1.9.0
+
+ARG COVER_FILENAME="cover.out"
+
+FROM --platform=${BUILDPLATFORM} tonistiigi/xx:${XX_VERSION} AS xx
+
+FROM --platform=${BUILDPLATFORM} golang:${GO_VERSION}-alpine AS golang
+COPY --link --from=xx / /
+WORKDIR /src
+ARG TARGETPLATFORM
+
+FROM golang AS build
+RUN --mount=target=/root/.cache,type=cache \
+    --mount=type=bind xx-go build ./...
+
+FROM golang AS runtest
+ARG TESTFLAGS="-v"
+ARG COVER_FILENAME
+RUN --mount=target=/root/.cache,type=cache \
+    --mount=type=bind \
+    xx-go test -coverprofile=/tmp/${COVER_FILENAME} $TESTFLAGS ./...
+
+FROM scratch AS test
+ARG COVER_FILENAME
+COPY --from=runtest /tmp/${COVER_FILENAME} /
+
+FROM build

Makefile

@@ -1,44 +1,5 @@
 PKGS := github.com/pkg/errors
-SRCDIRS := $(shell go list -f '{{.Dir}}' $(PKGS))
 GO := go
 
-check: test vet gofmt misspell unconvert staticcheck ineffassign unparam
-
-test: 
+test:
 	$(GO) test $(PKGS)
-
-vet: | test
-	$(GO) vet $(PKGS)
-
-staticcheck:
-	$(GO) get honnef.co/go/tools/cmd/staticcheck
-	staticcheck -checks all $(PKGS)
-
-misspell:
-	$(GO) get github.com/client9/misspell/cmd/misspell
-	misspell \
-		-locale GB \
-		-error \
-		*.md *.go
-
-unconvert:
-	$(GO) get github.com/mdempsky/unconvert
-	unconvert -v $(PKGS)
-
-ineffassign:
-	$(GO) get github.com/gordonklaus/ineffassign
-	find $(SRCDIRS) -name '*.go' | xargs ineffassign
-
-pedantic: check errcheck
-
-unparam:
-	$(GO) get mvdan.cc/unparam
-	unparam ./...
-
-errcheck:
-	$(GO) get github.com/kisielk/errcheck
-	errcheck $(PKGS)
-
-gofmt:  
-	@echo Checking code is gofmted
-	@test -z "$(shell gofmt -s -l -d -e $(SRCDIRS) | tee /dev/stderr)"

docker-bake.hcl

@@ -0,0 +1,57 @@
+variable "COVER_FILENAME" {
+    default = null
+}
+
+variable "GO_VERSION" {
+    default = null
+}
+
+target "default" {
+    targets = ["build"]
+}
+
+target "_all_platforms" {
+    platforms = [
+        "linux/amd64",
+        "linux/arm64",
+        "linux/arm/v7",
+        "linux/arm/v6",
+        "linux/386",
+        "linux/ppc64le",
+        "linux/s390x",
+        "linux/riscv64",
+        "darwin/amd64",
+        "darwin/arm64",
+        "windows/amd64",
+        "windows/arm64",
+    ]
+}
+
+target "build" {
+    output = ["type=cacheonly"]
+    args = {
+        GO_VERSION = GO_VERSION
+    }
+}
+
+target "build-all" {
+    inherits = ["build", "_all_platforms"]
+}
+
+target "test" {
+    target = "test"
+    args = {
+        COVER_FILENAME = COVER_FILENAME
+        GO_VERSION = GO_VERSION
+    }
+    output = [COVER_FILENAME != null ? "." : "type=cacheonly"]
+}
+
+target "lint" {
+    dockerfile = "hack/dockerfiles/lint.Dockerfile"
+    output = ["type=cacheonly"]
+}
+
+target "lint-all" {
+    inherits = ["lint", "_all_platforms"]
+}

go.mod

@@ -0,0 +1,3 @@
+module github.com/pkg/errors
+
+go 1.20

hack/dockerfiles/lint.Dockerfile

@@ -0,0 +1,28 @@
+#syntax=docker/dockerfile:1
+#check=error=true
+
+ARG GO_VERSION=1.26
+ARG ALPINE_VERSION=3.23
+ARG XX_VERSION=1.9.0
+ARG GOLANGCI_LINT_VERSION=2.11.2
+
+FROM --platform=$BUILDPLATFORM golang:${GO_VERSION}-alpine${ALPINE_VERSION} AS golang-base
+FROM --platform=$BUILDPLATFORM tonistiigi/xx:${XX_VERSION} AS xx
+
+FROM golang-base AS base
+ENV GOFLAGS="-buildvcs=false"
+ARG GOLANGCI_LINT_VERSION
+RUN wget -O- -nv https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s v${GOLANGCI_LINT_VERSION}
+COPY --link --from=xx / /
+WORKDIR /go/src/github.com/pkg/errors
+
+FROM base AS golangci-lint
+ARG TARGETPLATFORM
+RUN --mount=type=bind \
+    --mount=target=/root/.cache,type=cache \
+  xx-go --wrap && \
+  golangci-lint run && \
+  touch /golangci-lint.done
+
+FROM scratch
+COPY --link --from=golangci-lint /golangci-lint.done /