51 lines
1.8 KiB
Bash
Executable File
51 lines
1.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2026 LiveKit, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# Print the Go toolchain version pinned by a Dockerfile's golang builder image.
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#
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# usage: .github/scripts/go-version.sh [dockerfile] (default: Dockerfile)
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#
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# The pinned `golang:X.Y.Z-alpineA.B@sha256:...` builder image is the single source
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# of truth, and Renovate keeps it current via an approvable PR. Each workflow reads
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# the version out of the Dockerfile it builds against (setup-go cannot parse a
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# Dockerfile itself), so a job's Go runtime always matches the image it produces.
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#
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# Deliberately NOT derived from go.mod's `go` directive: that is the module
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# minimum, owned by the toolchain and by dependency requirements, and the go
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# command may rewrite it to a bare major.minor.
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set -euo pipefail
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dockerfile="${1:-Dockerfile}"
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if [ ! -f "$dockerfile" ]; then
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echo "$dockerfile: no such file" >&2
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exit 1
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fi
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version=$(sed -nE 's/^FROM[[:space:]]+golang:([0-9]+\.[0-9]+\.[0-9]+)[^[:space:]]*.*/\1/p' "$dockerfile" | sort -u)
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if [ -z "$version" ]; then
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echo "$dockerfile: no pinned 'FROM golang:X.Y.Z-...' base image found" >&2
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exit 1
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fi
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if [ "$(printf '%s\n' "$version" | wc -l)" -ne 1 ]; then
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echo "$dockerfile pins more than one Go version: $(echo $version)" >&2
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exit 1
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fi
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echo "$version"
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