ci: publish multi-arch images

.github/workflows/publish-images.yml

@@ -47,6 +47,9 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v4
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
       - name: Log in
         uses: docker/login-action@v4
         with:
@@ -70,7 +73,7 @@ jobs:
           context: .
           file: Dockerfile
           push: true
-          platforms: linux/amd64
+          platforms: linux/amd64,linux/arm64
           build-args: |
             VITE_SITE_URL=${{ vars.VITE_SITE_URL }}
             VITE_API_BASE_URL=/api/v1

Dockerfile

@@ -1,4 +1,4 @@
-FROM oven/bun:alpine AS web-build
+FROM --platform=$BUILDPLATFORM oven/bun:alpine AS web-build
 
 WORKDIR /workspace
 
@@ -14,26 +14,27 @@ COPY apps/web ./apps/web
 RUN bun install --frozen-lockfile
 RUN bun run build:web
 
-FROM golang:1.26-alpine AS api-build
+FROM --platform=$BUILDPLATFORM golang:1.26-alpine AS api-build
 
 WORKDIR /src/apps/api
 
+ARG TARGETOS
+ARG TARGETARCH
+
 COPY apps/api/go.mod apps/api/go.sum ./
 RUN go mod download
 
 COPY apps/api ./
 
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o /out/xdrop-api ./cmd/api
+RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH:-amd64} go build -o /out/xdrop-api ./cmd/api
 
 FROM nginx:1.29-alpine
 
 COPY infra/xdrop/nginx.conf.template /etc/nginx/templates/default.conf.template
-COPY infra/xdrop/entrypoint.sh /usr/local/bin/xdrop-entrypoint
+COPY --chmod=755 infra/xdrop/entrypoint.sh /usr/local/bin/xdrop-entrypoint
 COPY --from=web-build /workspace/apps/web/dist /usr/share/nginx/html
 COPY --from=api-build /out/xdrop-api /usr/local/bin/xdrop-api
 
-RUN chmod +x /usr/local/bin/xdrop-entrypoint
-
 EXPOSE 80
 
 ENTRYPOINT ["/usr/local/bin/xdrop-entrypoint"]

scripts/publish-images.test.ts

@@ -0,0 +1,25 @@
+import { readFileSync } from 'node:fs'
+import { join } from 'node:path'
+
+import { describe, expect, it } from 'bun:test'
+
+const repoRoot = join(import.meta.dir, '..')
+
+describe('publish image configuration', () => {
+  it('publishes a multi-platform image for amd64 and arm64', () => {
+    const workflow = readFileSync(
+      join(repoRoot, '.github', 'workflows', 'publish-images.yml'),
+      'utf8',
+    )
+
+    expect(workflow).toContain('platforms: linux/amd64,linux/arm64')
+  })
+
+  it('builds the API binary for the target image architecture', () => {
+    const dockerfile = readFileSync(join(repoRoot, 'Dockerfile'), 'utf8')
+
+    expect(dockerfile).toContain('ARG TARGETOS')
+    expect(dockerfile).toContain('ARG TARGETARCH')
+    expect(dockerfile).toContain('GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH:-amd64} go build')
+  })
+})