feat: move the EPP build docker file (#3555)

Signed-off-by: Anna Tchernych <atchernych@nvidia.com>

container/Dockerfile.epp

+# SPDX-FileCopyrightText: Copyright (c) 2024-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+# Dockerfile.epp - Custom Dockerfile for GAIE EPP. This is to be used with the deploy/inference-gateway/build-epp-dynamo.sh
+
+ARG BUILDER_IMAGE=golang:1.24
+ARG BASE_IMAGE=ubuntu:22.04
+
+############################
+# Builder
+############################
+FROM ${BUILDER_IMAGE} AS builder
+
+ENV CGO_ENABLED=1
+# be explicit; helps cgo when linking libstdc++
+ENV CC=gcc
+ENV CXX=g++
+
+# C/C++ toolchain for cgo, and libstdc++ for link-time
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    gcc g++ \
+    libc6-dev \
+    ca-certificates \
+ && rm -rf /var/lib/apt/lists/*
+
+ARG COMMIT_SHA=unknown
+ARG BUILD_REF
+
+WORKDIR /src
+
+# deps first (cache)
+COPY go.mod go.sum ./
+RUN go mod download
+
+# source
+COPY cmd/epp ./cmd/epp
+COPY pkg/epp ./pkg/epp
+COPY internal ./internal
+COPY api ./api
+
+# sanity (optional)
+RUN ls -la pkg/epp/scheduling/plugins/dynamo_kv_scorer/include/ || echo "Headers not found"
+RUN ls -la pkg/epp/scheduling/plugins/dynamo_kv_scorer/lib/ || echo "Library not found"
+
+# build
+WORKDIR /src/cmd/epp
+RUN go build \
+  -ldflags="-X sigs.k8s.io/gateway-api-inference-extension/pkg/epp/metrics.CommitSHA=${COMMIT_SHA} -X sigs.k8s.io/gateway-api-inference-extension/pkg/epp/metrics.BuildRef=${BUILD_REF}" \
+  -o /epp
+
+############################
+# Runtime
+############################
+FROM ${BASE_IMAGE} AS runtime
+
+# Minimal runtime deps; include libstdc++ runtime for -lstdc++
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ca-certificates \
+    libstdc++6 \
+ && rm -rf /var/lib/apt/lists/* \
+ && groupadd -r nonroot && useradd -r -g nonroot nonroot
+
+WORKDIR /
+COPY --from=builder /epp /epp
+
+USER nonroot:nonroot
+ENTRYPOINT ["/epp"]

deploy/inference-gateway/README.md

@@ -162,7 +162,7 @@ The script will apply a custom patch to the code with your GAIE repo and build t
 ```bash
 # Use your custom paths
 export DYNAMO_DIR=/path/to/dynamo
-export EPP_DIR=/path/to/gateway-api-inference-extension
+export GAIE_DIR=/path/to/gateway-api-inference-extension
 
 # Run the script
 cd deploy/inference-gateway

deploy/inference-gateway/build-epp-dynamo.sh

@@ -23,23 +23,23 @@ if [[ -z "${DYNAMO_DIR}" ]]; then
     exit 1
 fi
 
-if [[ -z "${EPP_DIR}" ]]; then
-    echo "EPP_DIR environment variable must be set"
-    echo "   Example: export EPP_DIR=/path/to/gateway-api-inference-extension-dynamo"
+if [[ -z "${GAIE_DIR}" ]]; then
+    echo "GAIE_DIR environment variable must be set"
+    echo "   Example: export GAIE_DIR=/path/to/gateway-api-inference-extension"
     exit 1
 fi
-DYNAMO_LIB_DIR="${EPP_DIR}/pkg/epp/scheduling/plugins/dynamo_kv_scorer/lib"
-DYNAMO_INCLUDE_DIR="${EPP_DIR}/pkg/epp/scheduling/plugins/dynamo_kv_scorer/include"
+DYNAMO_LIB_DIR="${GAIE_DIR}/pkg/epp/scheduling/plugins/dynamo_kv_scorer/lib"
+DYNAMO_INCLUDE_DIR="${GAIE_DIR}/pkg/epp/scheduling/plugins/dynamo_kv_scorer/include"
 
-echo "🏗️  Building Dynamo KV Router C Library..."
+echo "Building Dynamo KV Router C Library..."
 
 # Step 1: Build the static library
-echo "📦 Building static library..."
+echo "Building static library..."
 cd "${DYNAMO_DIR}"
 cargo build --release -p libdynamo_llm
 
 # Step 2: Generate header file (with fallback)
-echo "📝 Generating C header..."
+echo "Generating C header..."
 HEADER_OUTPUT="${DYNAMO_DIR}/lib/bindings/c/include/nvidia/dynamo_llm/llm_engine.h"
 
 if ! cbindgen --config lib/bindings/c/cbindgen.toml --crate libdynamo_llm --output "${HEADER_OUTPUT}"; then
@@ -47,15 +47,16 @@ if ! cbindgen --config lib/bindings/c/cbindgen.toml --crate libdynamo_llm --outp
     cp "${DYNAMO_DIR}/lib/bindings/c/src/fallback_header.h" "${HEADER_OUTPUT}"
 fi
 
-# Step 3: Ensure EPP directories exist
-echo "Preparing EPP directories..."
+# Step 3: Ensure directories exist
+echo "Preparing directories..."
 mkdir -p "${DYNAMO_LIB_DIR}"
 mkdir -p "${DYNAMO_INCLUDE_DIR}"
 
-# Step 4: Copy files to EPP
-echo "Copying files to EPP..."
+# Step 4: Copy files to GAIE project
+echo "Copying files to the GAIE project..."
 cp "${HEADER_OUTPUT}" "${DYNAMO_INCLUDE_DIR}/"
 cp "${DYNAMO_DIR}/target/release/libdynamo_llm_capi.a" "${DYNAMO_LIB_DIR}/"
+cp "${DYNAMO_DIR}/container/Dockerfile.epp" "${GAIE_DIR}/Dockerfile.dynamo"
 
 # Verify files were copied
 if [[ ! -f "${DYNAMO_INCLUDE_DIR}/llm_engine.h" ]]; then
@@ -68,13 +69,19 @@ if [[ ! -f "${DYNAMO_LIB_DIR}/libdynamo_llm_capi.a" ]]; then
     exit 1
 fi
 
+if [[ ! -f "${GAIE_DIR}/Dockerfile.epp" ]]; then
+    echo "Docker.epp file copy failed!"
+    exit 1
+fi
+
 echo "Files copied successfully:"
 echo "   Header: ${DYNAMO_INCLUDE_DIR}/llm_engine.h"
 echo "   Library: ${DYNAMO_LIB_DIR}/libdynamo_llm_capi.a"
+echo "   Docker: ${GAIE_DIR}/Dockerfile.epp"
 
 # Step 5: Apply Dynamo patch (if it exists)
-echo "🔧 Applying Dynamo patch..."
-cd "${EPP_DIR}"
+echo "Applying Dynamo patch..."
+cd "${GAIE_DIR}"
 
 PATCH_FILE="${DYNAMO_DIR}/deploy/inference-gateway/epp-patches/v0.5.1-2/epp-v0.5.1-dyn2.patch"
 if [[ -f "${PATCH_FILE}" ]]; then
@@ -89,7 +96,7 @@ else
 fi
 
 # Step 6: Build the EPP image
-echo "Building the EPP image..."
+echo "Building the custom EPP image for GAIE..."
 make dynamo-image-local-load
 
-echo "EPP with Dynamo KV routing built"
+echo "EPP image with Dynamo KV routing built"

deploy/inference-gateway/epp-patches/epp-v0.5.1-2/epp-v0.5.1-dyn2.patch

-diff --git a/Dockerfile.dynamo b/Dockerfile.dynamo
-new file mode 100644
-index 0000000..3f0e0a0
---- /dev/null
-+++ b/Dockerfile.dynamo
-@@ -0,0 +1,66 @@
-+# Dockerfile.dynamo - Custom Dockerfile for Dynamo FFI plugin
-+ARG BUILDER_IMAGE=golang:1.24
-+ARG BASE_IMAGE=ubuntu:22.04
-+
-+############################
-+# Builder
-+############################
-+FROM ${BUILDER_IMAGE} AS builder
-+
-+ENV CGO_ENABLED=1
-+ENV GOOS=linux
-+ENV GOARCH=amd64
-+# be explicit; helps cgo when linking libstdc++
-+ENV CC=gcc
-+ENV CXX=g++
-+
-+# C/C++ toolchain for cgo, and libstdc++ for link-time
-+RUN apt-get update && apt-get install -y --no-install-recommends \
-+    build-essential \
-+    gcc g++ \
-+    libc6-dev \
-+    ca-certificates \
-+ && rm -rf /var/lib/apt/lists/*
-+
-+ARG COMMIT_SHA=unknown
-+ARG BUILD_REF
-+
-+WORKDIR /src
-+
-+# deps first (cache)
-+COPY go.mod go.sum ./
-+RUN go mod download
-+
-+# source
-+COPY cmd/epp ./cmd/epp
-+COPY pkg/epp ./pkg/epp
-+COPY internal ./internal
-+COPY api ./api
-+
-+# sanity (optional)
-+RUN ls -la pkg/epp/scheduling/plugins/dynamo_kv_scorer/include/ || echo "Headers not found"
-+RUN ls -la pkg/epp/scheduling/plugins/dynamo_kv_scorer/lib/ || echo "Library not found"
-+
-+# build
-+WORKDIR /src/cmd/epp
-+RUN go build \
-+  -ldflags="-X sigs.k8s.io/gateway-api-inference-extension/pkg/epp/metrics.CommitSHA=${COMMIT_SHA} -X sigs.k8s.io/gateway-api-inference-extension/pkg/epp/metrics.BuildRef=${BUILD_REF}" \
-+  -o /epp
-+
-+############################
-+# Runtime
-+############################
-+FROM ${BASE_IMAGE} AS runtime
-+
-+# Minimal runtime deps; include libstdc++ runtime for -lstdc++
-+RUN apt-get update && apt-get install -y --no-install-recommends \
-+    ca-certificates \
-+    libstdc++6 \
-+ && rm -rf /var/lib/apt/lists/* \
-+ && groupadd -r nonroot && useradd -r -g nonroot nonroot
-+
-+WORKDIR /
-+COPY --from=builder /epp /epp
-+
-+USER nonroot:nonroot
-+ENTRYPOINT ["/epp"]
 diff --git a/Makefile b/Makefile
 index dee7e99..4679ce2 100644
 --- a/Makefile
@@ -647,7 +575,7 @@ index 0000000..1f6a41f
 +)
 +
 +func loadDynamoConfig() {
-+	ffiNamespace = getEnvOrDefault("DYN_NAMESPACE", "vllm-agg")
++	ffiNamespace = getEnvOrDefault("DYNAMO_NAMESPACE", "vllm-agg")
 +	ffiComponent = getEnvOrDefault("DYNAMO_COMPONENT", "backend")
 +	ffiModel = getEnvOrDefault("DYNAMO_MODEL", "Qwen/Qwen3-0.6B")
 +	ffiWorkerID = getEnvInt64OrDefault("DYNAMO_WORKER_ID", 1)