From 5a29edc8ede50209d64c04bcca86bbc617c9ebde Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Mon, 20 Jul 2026 03:09:23 +0000
Subject: [PATCH 1/2] Initial plan


From f4b662d037737434654fdf2f3d9e57e3aa25f064 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Mon, 20 Jul 2026 03:15:42 +0000
Subject: [PATCH 2/2] Fix arm64 Docker build failure: use multi-stage build
 with --platform=$BUILDPLATFORM

The linux/arm64 Docker builds were failing with "Illegal instruction" (exit code
132/SIGILL) because Node.js 22 uses CPU instructions that QEMU's ARM64 emulation
on GitHub Actions runners does not support.

Fix: convert dockerfile-captain.edge and dockerfile-captain.release to multi-stage
builds where the build stage uses --platform=$BUILDPLATFORM so all npm/Node.js
commands run on the native host platform (amd64), bypassing QEMU entirely. The
final stage copies the complete /usr/src/app directory from the builder and uses
the target platform's Node.js runtime without running any build commands.
---
 dockerfile-captain.edge    | 13 ++++++++++---
 dockerfile-captain.release | 14 +++++++++++---
 2 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/dockerfile-captain.edge b/dockerfile-captain.edge
index f53e8bb..a7c0db8 100644
--- a/dockerfile-captain.edge
+++ b/dockerfile-captain.edge
@@ -1,10 +1,10 @@
-FROM node:22-alpine
-RUN apk add --update --no-cache make gcc g++ git curl openssl openssh
+# Build stage runs on the host platform to avoid QEMU SIGILL issues with Node.js 22 on arm64
+FROM --platform=$BUILDPLATFORM node:22-alpine AS builder
+RUN apk add --update --no-cache make gcc g++ git curl openssl
 
 WORKDIR /usr/src/app
 COPY . ./
 
-
 # Build backend code
 RUN npm ci && \
      npm run build && \
@@ -12,6 +12,13 @@ RUN npm ci && \
      npm cache clean --force && \
      mv ./edge-override.json ./config-override.json
 
+# Final stage uses the target platform's Node.js runtime
+FROM node:22-alpine
+RUN apk add --update --no-cache git curl openssl openssh
+
+WORKDIR /usr/src/app
+COPY --from=builder /usr/src/app .
+
 # This quick hack invalidates the cache.
 ADD https://www.google.com /time.now
 
diff --git a/dockerfile-captain.release b/dockerfile-captain.release
index 2481167..6b733fc 100644
--- a/dockerfile-captain.release
+++ b/dockerfile-captain.release
@@ -1,5 +1,6 @@
-FROM node:22-alpine
-RUN apk add --update --no-cache make gcc g++ git curl openssl openssh
+# Build stage runs on the host platform to avoid QEMU SIGILL issues with Node.js 22 on arm64
+FROM --platform=$BUILDPLATFORM node:22-alpine AS builder
+RUN apk add --update --no-cache make gcc g++ git curl openssl
 
 WORKDIR /usr/src/app
 COPY . ./
@@ -9,7 +10,14 @@ RUN npm ci && \
      npm run build && \
      npm ci --omit=dev && \
      npm cache clean --force
-      
+
+# Final stage uses the target platform's Node.js runtime
+FROM node:22-alpine
+RUN apk add --update --no-cache git curl openssl openssh
+
+WORKDIR /usr/src/app
+COPY --from=builder /usr/src/app .
+
 ENV NODE_ENV production
 ENV PORT 3000
 EXPOSE 3000