build: pin the test-server builder stage to the host platform

Same change as the server Dockerfile: the builder already cross-compiles
via GOARCH=$TARGETARCH, so running it on $BUILDPLATFORM avoids compiling
the arm64 image under QEMU.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Benjamin PrachtandClaude Opus 5.5 committed 2026-10-27 10:31:44 -07:00
1 parent 1c72fd2b53
commit 4a958aed60
1 file changed
+3 -1
+3 -1
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@@ -17,7 +17,9 @@
#
# Pinned by digest so the build is reproducible even if the tag is republished.
# The tag is kept alongside it for readability; Renovate updates both together.
FROM golang:1.27.3-alpine3.24@sha256:f2c872bcee949b7be9c490efd02b48a8a2fbf947cdf533f1c58525ec9d8170fd AS builder
# --platform=$BUILDPLATFORM runs the builder natively and cross-compiles via
# GOARCH below, rather than compiling under QEMU; see the repo-root Dockerfile.
FROM --platform=$BUILDPLATFORM golang:1.27.3-alpine3.24@sha256:f2c872bcee949b7be9c490efd02b48a8a2fbf947cdf533f1c58525ec9d8170fd AS builder
ARG TARGETARCH