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fix(docker): force amd64 platform for build stages to avoid QEMU timeout

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The multi-arch Docker build was timing out after 1 hour because
the backend-builder stage was running under QEMU emulation for arm64.
Building 31 Go binaries under QEMU is extremely slow.

Since Go cross-compiles all target architectures anyway, and the
frontend build produces platform-independent JS, there's no need
to run these stages under QEMU. Force them to linux/amd64 and let
Go handle cross-compilation natively.

Only the runtime stages need to be multi-arch (for the correct
Alpine base image and binary selection).
This commit is contained in:
rcourtman 2025-12-27 13:21:53 +00:00
parent fc6d6d22d3
commit f4cf28e75d
1 changed files with 5 additions and 2 deletions
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7
Dockerfile
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@ -3,7 +3,8 @@ ARG BUILD_AGENT=1
ARG PULSE_LICENSE_PUBLIC_KEY
# Build stage for frontend (must be built first for embedding)
FROM node:20-alpine AS frontend-builder
# Force amd64 platform to avoid slow QEMU emulation during multi-arch builds
FROM --platform=linux/amd64 node:20-alpine AS frontend-builder
WORKDIR /app/frontend-modern
@ -20,7 +21,9 @@ RUN --mount=type=cache,id=pulse-npm-cache,target=/root/.npm \
npm run build
# Build stage for Go backend
FROM golang:1.24-alpine AS backend-builder
# Force amd64 platform - Go cross-compiles for all targets anyway,
# and this avoids slow QEMU emulation during multi-arch builds
FROM --platform=linux/amd64 golang:1.24-alpine AS backend-builder
ARG BUILD_AGENT
ARG PULSE_LICENSE_PUBLIC_KEY