[cookbook] Add configurable Docker build arguments

genai-cookbook/Dockerfile

@@ -1,25 +1,30 @@
 # //////////////////////////////////////////////////////////////////////
 # BASE ON UNIVERSAL MAX CONTAINER
-FROM modular/max-full
+# Use MAX_VARIANT build arg to select base image:
+#   - omitted/default → max-full:nightly
+#   - MAX_VARIANT=amd → max-amd-full:nightly
+#   - MAX_VARIANT=nvidia → max-nvidia-full:nightly
+
+ARG MAX_GPU=universal
+ARG MAX_TAG=latest
+
+FROM modular/max-full:${MAX_TAG} AS base-universal
+FROM modular/max-amd:${MAX_TAG} AS base-amd
+FROM modular/max-nvidia-full:${MAX_TAG} AS base-nvidia
+
+FROM base-${MAX_GPU} AS final
 
 WORKDIR /app
 
 # //////////////////////////////////////////////////////////////////////
-# UPDATE SYSTEM
+# INSTALL NODE
 
-RUN apt-get update && apt-get install -y \
-    curl \
-    build-essential \
-    git \
-    wget \
+RUN wget -qO- https://deb.nodesource.com/setup_22.x | bash - \
+    && apt-get install -y nodejs \
     && rm -rf /var/lib/apt/lists/*
 
 # //////////////////////////////////////////////////////////////////////
-# INSTALL NODE & NPM PACKAGES
-
-RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash - \
-&& apt-get install -y nodejs \
-&& rm -rf /var/lib/apt/lists/*
+# INSTALL NPM PACKAGES
 
 RUN npm install -g pm2 wait-on@7.2.0
 

genai-cookbook/README.md

@@ -187,6 +187,32 @@ docker build --ulimit nofile=65535:65535 -t max-cookbook:latest .
 
 **Note:** The `--ulimit nofile=65535:65535` flag increases the file descriptor limit, which is needed for Next.js builds.
 
+#### Build Arguments
+
+You can customize the Docker build using these arguments to reduce container size:
+
+- **MAX_GPU**: Selects the base image (default: `universal`)
+  - `universal` → `modular/max-full` (larger, supports all GPU types)
+  - `amd` → `modular/max-amd` (smaller, AMD-specific)
+  - `nvidia` → `modular/max-nvidia-full` (smaller, NVIDIA-specific)
+
+- **MAX_TAG**: Selects the image version (default: `latest`)
+  - `latest` → Latest stable release
+  - `nightly` → Nightly development builds
+  - Specific versions (e.g., `25.7.0`)
+
+**Examples:**
+
+Build smaller AMD-specific container:
+```bash
+docker build --build-arg MAX_GPU=amd --ulimit nofile=65535:65535 -t max-cookbook:amd .
+```
+
+Build smaller NVIDIA-specific container with nightly builds:
+```bash
+docker build --build-arg MAX_GPU=nvidia --build-arg MAX_TAG=nightly --ulimit nofile=65535:65535 -t max-cookbook:nvidia-nightly .
+```
+
 ### Running the Container
 
 #### NVIDIA GPU