refactor: rhcl build is now cross-build with go

Signed-off-by: Paul Bastide <pbastide@us.ibm.com>

Author: prb112

.github/workflows/publish-llm-d-inference-sim.yaml

@@ -34,6 +34,23 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v6
 
+      - name: Setup Go 1.24.x
+        uses: actions/setup-go@v6
+        with:
+          go-version: '1.26.x'
+
+      - name: Build the binaries
+        run: |
+          mkdir -p tmp/
+          cd tmp/
+          curl -O -L https://github.com/llm-d/llm-d-inference-sim/archive/refs/tags/v0.8.2.zip && \
+              dnf install unzip -y && \
+              unzip v0.8.2.zip
+          cd llm-d-inference-sim-0.8.2
+          cp cmd/llm-d-inference-sim/main.go cmd/cmd.go
+          CGO_ENABLED=0 GOOS=linux GOARCH=ppc64le go build -o bin/llm-d-inference-sim ./cmd/cmd.go
+          CGO_ENABLED=0 GOOS=linux GOARCH=s390x go build -o bin/llm-d-inference-sim ./cmd/cmd.go
+
       # Install the cosign tool except on PR
       # https://github.com/sigstore/cosign-installer
       - name: Install cosign

rhcl/llm-d-inference-sim/.gitignore

@@ -0,0 +1 @@
+**/tmp/*

rhcl/llm-d-inference-sim/Containerfile

@@ -1,31 +1,11 @@
-# Build Stage: using Go 1.25.0 image
-## Pure Go build, no CGO required
-FROM quay.io/projectquay/golang:1.25 AS builder
-
-WORKDIR /workspace
-
-RUN curl -O -L https://github.com/llm-d/llm-d-inference-sim/archive/refs/tags/v0.8.2.zip && \
-    dnf install unzip -y && \
-    unzip v0.8.2.zip
-
-WORKDIR /workspace/llm-d-inference-sim-0.8.2
-
-# cache deps before building and copying source so that we don't need to re-download as much
-# and so that source changes don't invalidate our downloaded layer
-RUN go mod download
-
-RUN cp cmd/llm-d-inference-sim/main.go cmd/cmd.go
-
-# Build simulator, no Python, no embedded tokenizer, no CGO for ZMQ, use pure Go
-# The default kv-cache build uses UDS tokenizer (//go:build !embedded_tokenizers)
-RUN CGO_ENABLED=0 GOOS=linux go build -o bin/llm-d-inference-sim ./cmd/cmd.go
-
 FROM registry.access.redhat.com/ubi10/ubi-micro:latest
 
 WORKDIR /
 
-COPY --from=builder /workspace/llm-d-inference-sim-0.8.2/bin/llm-d-inference-sim /app/llm-d-inference-sim
+ADD tmp/llm-d-inference-sim-0.8.2/bin/llm-d-inference-sim-* /app/
+
+RUN mv tmp/llm-d-inference-sim-0.8.2/bin/llm-d-inference-sim-$(arch) llm-d-inference-sim
 
 USER 65532:65532
 
-ENTRYPOINT ["/app/llm-d-inference-sim"]
+ENTRYPOINT ["/app/llm-d-inference-sim"]

rhcl/llm-d-inference-sim/build-noncgo.sh

@@ -0,0 +1,12 @@
+mkdir -p tmp/
+cd tmp/
+
+curl -O -L https://github.com/llm-d/llm-d-inference-sim/archive/refs/tags/v0.8.2.zip && \
+    dnf install unzip -y && \
+    unzip v0.8.2.zip
+
+cd llm-d-inference-sim-0.8.2
+cp cmd/llm-d-inference-sim/main.go cmd/cmd.go
+
+CGO_ENABLED=0 GOOS=linux GOARCH=ppc64le go build -o bin/llm-d-inference-sim ./cmd/cmd.go
+CGO_ENABLED=0 GOOS=linux GOARCH=s390x go build -o bin/llm-d-inference-sim ./cmd/cmd.go