#!/bin/sh
# script/lint: run golangci-lint. The linter is never installed on the
# host; it runs only inside Docker, from the pinned image in
# Dockerfile.lint, so every run uses the same linter version everywhere.
# Linting is a build step there, so a successful build is a clean lint.
#
# GATE_RUN differs every run so the lint layer always executes; a cached
# build would otherwise exit 0 in under a second having linted nothing.
# --output=type=cacheonly discards the image and keeps only build cache,
# so no tagged image is left behind.
set -eu

ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"

main() {
    cd "$ROOT"
    docker build \
        --build-arg GATE_RUN="$(date +%s)-$$" \
        --output=type=cacheonly \
        -f Dockerfile.lint \
        .
}

main "$@"