# Build WebDNN from source with Node.js and Python tooling
FROM node:14-bullseye

# Install system dependencies: Python, build tools, Git, and curl
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
      python3 \
      python3-pip \
      ca-certificates \
      curl \
      gnupg \
      build-essential \
      git && \
    rm -rf /var/lib/apt/lists/*

# Install Emscripten SDK for WebAssembly build (required for wasm backend in build)
RUN git clone https://github.com/emscripten-core/emsdk.git /emsdk && \
    /bin/bash -lc 'source /emsdk/emsdk_env.sh && emsdk install latest && emsdk activate latest'

# Ensure emscripten tools are on PATH
ENV PATH=/emsdk:/emsdk/upstream/emscripten:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

# Create and set workdir
WORKDIR /workspace

# Copy manifests first to leverage build cache
COPY package.json yarn.lock ./

# Install Node.js dependencies
RUN npm install

# Copy the rest of the repository
COPY . .

# Build the project from source (includes wasm and webgpu shader components)
RUN npm run build:all

# Expose nothing by default; container can run a server or shell as needed
CMD ["bash"]

node_modules/
dist/
.dockerignore
Dockerfile
README*
*.md
example/
*.log
*.cache
node_modules

Summary of Docker build error (concise, preserving key details)

- Exact error message and exit code
  - sh: 1: python: not found
  - Exit code: 1

- Failing command/step
  - Step: [8/8] RUN npm run build:all
  - Failing internal command: shader:wasm (invoked by build:all), which runs python src/shader/wasm/compile.py

- Missing packages or files mentioned
  - python: not found (ENOENT)
  - Note: python3 is installed (Python 3.9.2 per logs) but there is no /usr/bin/python alias, i.e., the build expects a python interpreter named python

- Version mismatch information
  - No explicit version mismatch reported. The issue is absence of the python binary, even though Python 3 is installed (python3) and used for other tasks (e.g., python3-pip). No mismatch between tool versions is shown; instead a missing executable causes the failure.

Context note
- The build proceeds up to npm run build:all, then fails during shader/wasm compilation due to missing python binary. Installing a python binary named python (or symlinking python3 to python) should resolve this step.

# Build WebDNN from source with Node.js and Python tooling
FROM node:14-bullseye

# Install system dependencies: Python, build tools, Git, and curl
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
      python3 \
      python3-pip \
      python-is-python3 \
      ca-certificates \
      curl \
      gnupg \
      build-essential \
      git && \
    rm -rf /var/lib/apt/lists/*

# Ensure python is available as /usr/bin/python (via python-is-python3 or symlink)
RUN ln -s /usr/bin/python3 /usr/bin/python 2>/dev/null || true

# Create and set workdir
WORKDIR /workspace

# Copy manifests first to leverage build cache
COPY package.json yarn.lock ./

# Install Node.js dependencies
RUN npm install

# Copy the rest of the repository
COPY . .

# Build the project from source (includes wasm and webgpu shader components)
RUN npm run build:all

# Expose nothing by default; container can run a server or shell as needed
CMD ["bash"]

Failing step
- RUN npm run build:all (Dockerfile step 8/8)

Exact error messages and exit codes
- FileNotFoundError: [Errno 2] No such file or directory: 'emcc'
- npm ERR! code ELIFECYCLE
- npm ERR! errno 1
- npm ERR! webdnn@2.0.0 shader:wasm: `python src/shader/wasm/compile.py`
- npm ERR! Exit status 1
- npm ERR! code ELIFECYCLE
- npm ERR! errno 1
- npm ERR! webdnn@2.0.0 build:all: `npm run shader:wasm && npm run shader:webgpu && npm run makeShaderList && npm run build && npm run build:core`
- npm ERR! Exit status 1
- ERROR: failed to build: failed to solve: process "/bin/sh -c npm run build:all" did not complete successfully: exit code: 1

What failed and missing
- The shader:wasm step fails because emcc (Emscripten compiler) is not found:
  - FileNotFoundError: [Errno 2] No such file or directory: 'emcc'
- Missing file/binary mentioned: emcc (Emscripten compiler) is not installed or not in PATH.

Version/mismatch notes
- Base image: node:14-bullseye (Debian bullseye)
- No explicit version mismatch is reported; the failure is due to missing emcc, not a version conflict.

# Build WebDNN from source with Node.js and Python tooling
FROM node:14-bullseye

# Install system dependencies: Python, build tools, Git, and curl
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
      python3 \
      python3-pip \
      ca-certificates \
      curl \
      git \
      build-essential \
      wget \
      unzip \
      ca-certificates \
      && rm -rf /var/lib/apt/lists/*

# Ensure python is available as /usr/bin/python (via python-is-python3 alias or symlink)
RUN ln -s /usr/bin/python3 /usr/bin/python 2>/dev/null || true

# Install Emscripten SDK for WebAssembly build (required for wasm backend in build)
RUN git clone https://github.com/emscripten-core/emsdk.git /emsdk && \
    cd /emsdk && \
    ./emsdk install latest && \
    ./emsdk activate latest && \
    . ./emsdk_env.sh

# Ensure emscripten tools are on PATH
ENV PATH=/emsdk:/emsdk/upstream/emscripten:${PATH}

# Create and set workdir
WORKDIR /workspace

# Copy manifests first to leverage build cache
COPY package.json ./

# Install Node.js dependencies
RUN npm install

# Copy the rest of the repository
COPY . .

# Build the project from source (includes wasm and webgpu shader components)
RUN npm run build:all

# Expose nothing by default; container can run a server or shell as needed
CMD ["bash"]

- Exact error message and exit code
  - AssertionError: emscripten requires python 3.10 or above (/usr/bin/python3 3.9.2 (default, Feb 28 2021, 17:03:44) [GCC 10.2.1 20210110])
  - Exit code: 1 (manifests as a subprocess.CalledProcessError for the emcc call; npm exits with ELIFECYCLE and Exit status 1)

- Failing command/step
  - RUN npm run build:all (Dockerfile:9/9)
  - Within this, the shader:wasm step runs python src/shader/wasm/compile.py, which invokes emcc and fails with the above assertion.

- Missing packages or files mentioned
  - No missing packages/files cited. The issue is the Python version.

- Version mismatch information
  - emscripten requires Python 3.10 or above
  - Current Python version in the image: 3.9.2 (/usr/bin/python3 3.9.2)
  - This is the root cause of the failure during emcc invocation in the build.

# Build WebDNN from source with Node.js and Python tooling
FROM node:18-bullseye

# Install system dependencies: Python3.10 (built from source), build tools, Git, and curl
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
      ca-certificates \
      curl \
      gnupg \
      build-essential \
      git \
      wget \
      libssl-dev \
      zlib1g-dev \
      libncurses5-dev \
      libreadline-dev \
      libsqlite3-dev \
      libbz2-dev \
      libffi-dev \
      liblzma-dev \
      tk-dev \
      ca-certificates \
      && rm -rf /var/lib/apt/lists/*

# Build Python 3.10 from source to satisfy emsdk requirement
ENV PYTHON_VERSION=3.10.13
WORKDIR /tmp
RUN set -eux; \
    export DEBIAN_FRONTEND=noninteractive; \
    wget https://www.python.org/ftp/python/${PYTHON_VERSION}/Python-${PYTHON_VERSION}.tar.xz -O Python-${PYTHON_VERSION}.tar.xz; \
    tar -xf Python-${PYTHON_VERSION}.tar.xz; \
    cd Python-${PYTHON_VERSION}; \
    ./configure --enable-optimizations; \
    make -j$(nproc); \
    make altinstall; \
    cd /; \
    rm -rf /tmp/Python-${PYTHON_VERSION}*

# Ensure python is available as /usr/bin/python (alias to python3.10)
RUN ln -s /usr/local/bin/python3.10 /usr/bin/python

# Install Emscripten SDK for WebAssembly build (required for wasm backend in build)
RUN git clone https://github.com/emscripten-core/emsdk.git /emsdk && \
    /bin/bash -lc 'cd /emsdk && ./emsdk install latest && ./emsdk activate latest' && \
    echo 'source /emsdk/emsdk_env.sh' >> /root/.bashrc

# Ensure emscripten tools are on PATH
ENV PATH=/emsdk:/emsdk/upstream/emscripten:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

# Create and set workdir
WORKDIR /workspace

# Copy manifests first to leverage build cache
COPY package.json ./

# Install Node.js dependencies
RUN npm install

# Copy the rest of the repository
COPY . .

# Build the project from source (includes wasm and webgpu shader components)
RUN npm run build:all

# Expose nothing by default; container can run a server or shell as needed
CMD ["bash"]

Build timed out after 600s

FROM node:18-bullseye-slim

# Basic metadata
LABEL maintainer="WebDNN BuildAgent"

# Non-interactive apt
ENV DEBIAN_FRONTEND=noninteractive

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
  ca-certificates \
  curl \
  git \
  python3 \
  python3-pip \
  build-essential \
  && rm -rf /var/lib/apt/lists/*

# Install yarn (consistently with yarn.lock)
RUN npm i -g yarn

# Install Emscripten SDK (needed for wasm shader compilation)
RUN git clone https://github.com/emscripten-core/emsdk.git /emsdk
ENV EMSDK="/emsdk"
# Install and activate the latest toolchain
RUN /bin/bash -lc "cd /emsdk && ./emsdk install latest && ./emsdk activate latest"

# Ensure a python binary named 'python' exists (Python 3 is installed as python3)
RUN if [ ! -e /usr/bin/python ]; then ln -s /usr/bin/python3 /usr/bin/python; fi

# Copy source code into the image
COPY . /workspace
WORKDIR /workspace

# Build the project from source
# Build is performed in a single shell to preserve emsdk environment for the duration
RUN /bin/bash -lc ". /emsdk/emsdk_env.sh && yarn install && yarn build:all"

# Clean up apt artifacts to reduce image size
RUN apt-get clean && rm -rf /var/lib/apt/lists/*

# Default to an interactive shell
CMD ["bash"]

# Multi-stage build for WebDNN
# Stage 1: Build with emscripten and Node.js tooling
FROM emscripten/emsdk:latest AS build

# Install system dependencies including Node.js, Python tooling, and build essentials
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        curl \
        ca-certificates \
        git \
        build-essential \
        cmake \
        python3 \
        python3-pip \
        wget \
        || true && \
    rm -rf /var/lib/apt/lists/*

# Install Node.js 18.x (LTS) using NodeSource
RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash - && \
    apt-get update && \
    apt-get install -y --no-install-recommends nodejs && \
    rm -rf /var/lib/apt/lists/*

# Set build context
WORKDIR /workspace

# Copy package manifests first to leverage caching
COPY package.json yarn.lock* ./

# Install npm/yarn dependencies
RUN npm install -g yarn && \
    yarn install --frozen-lockfile

# Copy the rest of the source
COPY . .

# Build the project (this will also build shaders via the included scripts)
RUN yarn build:all


# Stage 2: Lightweight runtime image that serves the built artifacts
FROM node:18-bullseye-slim AS runtime

WORKDIR /workspace

# Copy built artifacts from the build stage
COPY --from=build /workspace/dist /workspace/dist

# Expose a convenient port for the static server
EXPOSE 8080

# Serve the built distribution using a tiny static HTTP server via npx
CMD ["npx", "http-server", "dist", "-p", "8080", "-c", "-1"]

- Exact error message and exit code
  - sh: 1: python: not found
  - Exit code: 127
- Failing command/step
  - Step: RUN yarn build:all (build 8/8)
  - Inside the step: npm run shader:wasm && npm run shader:webgpu && npm run makeShaderList && npm run build && npm run build:core
  - The failure occurs during: npm run shader:wasm -> python src/shader/wasm/compile.py (Python script execution)
- Missing packages or files mentioned
  - The Python interpreter is not found (the image has python3 installed, but the plain python binary is missing)
- Version mismatch / related info
  - Node.js 18.x is no longer actively supported (DEPRECATION WARNING from NodeSource)
  - Node.js installed: nodejs 18.20.8-1nodesource1
  - npm reported a newer major version available: 11.12.0 (current 10.9.2)
  - Build context shows Python3 and pip were installed earlier, but the python binary (Python 2/legacy python) is not present, causing the failure

Cause: The shader build script expects a python executable named python, which is absent in the image; installing python (or creating a python symlink to python3) would resolve it.

# Multi-stage build for WebDNN
# Stage 1: Build with emscripten and Node.js tooling
FROM emscripten/emsdk:latest AS build

# Install system dependencies including Node.js, Python tooling, and build essentials
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        curl \
        ca-certificates \
        git \
        build-essential \
        cmake \
        python3 \
        python3-pip \
        wget \
        && rm -rf /var/lib/apt/lists/*

# Ensure python binary exists for shader scripts (some scripts expect 'python')
RUN ln -s /usr/bin/python3 /usr/bin/python || true

# Install Node.js 18.x (LTS) using NodeSource
RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash - && \
    apt-get update && \
    apt-get install -y --no-install-recommends nodejs && \
    rm -rf /var/lib/apt/lists/*

# Set build context
WORKDIR /workspace

# Copy package manifests first to leverage caching
COPY package.json yarn.lock* ./

# Install npm/yarn dependencies
RUN npm install -g yarn && \
    yarn install --frozen-lockfile

# Copy the rest of the source
COPY . .

# Build the project (this will also build shaders via the included scripts)
RUN yarn build:all


# Stage 2: Lightweight runtime image that serves the built artifacts
FROM node:18-bullseye-slim AS runtime

WORKDIR /workspace

# Copy built artifacts from the build stage
COPY --from=build /workspace/dist /workspace/dist

# Install a lightweight static server
RUN npm install -g http-server

# Expose a convenient port for the static server
EXPOSE 8080

# Serve the built distribution using a tiny static HTTP server
CMD ["http-server", "dist", "-p", "8080", "-c", "-1"]

Summary (under 1500 chars):

- Failing command/step:
  - RUN yarn build:all during the final build (Dockerfile: line 41; build step 9/9).

- Exact error message and exit code:
  - Error: error:0308010C:digital envelope routines::unsupported
  - at new Hash (node:internal/crypto/hash:79:19)
  - at Object.createHash (node:crypto:139:10)
  - at BulkUpdateDecorator.hashFactory (/workspace/node_modules/webpack/lib/util/createHash.js:144:18)
  - at BulkUpdateDecorator.update (/workspace/node_modules/webpack/lib/util/createHash.js:46:50)
  - at RawSource.updateHash (/workspace/node_modules/webpack-sources/lib/RawSource.js:64:8)
  - at NormalModule._initBuildHash (/workspace/node_modules/webpack/lib/NormalModule.js:853:17)
  - ... (trace continues)
  - opensslErrorStack: [
      'error:03000086:digital envelope routines::initialization error',
      'error:0308010C:digital envelope routines::unsupported'
    ]
  - library: 'digital envelope routines'
  - reason: 'unsupported'
  - code: 'ERR_OSSL_EVP_UNSUPPORTED'
  - Node.js v22.16.0
  - Exit code: 1

- Missing packages or files mentioned:
  - None explicitly mentioned as missing.

- Version mismatch / related info:
  - Node.js version shown during failure: v22.16.0
  - Earlier steps installed Node.js 18.x (e.g., nodejs 18.20.8), indicating a Node version mismatch inside the build. The OpenSSL-related error is typical when using newer Node/OpenSSL combos with webpack.

# Multi-stage build for WebDNN
# Stage 1: Build with emscripten and Node.js tooling
FROM emscripten/emsdk:latest AS build

# Install system dependencies including Node.js, Python tooling, and build essentials
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        curl \
        ca-certificates \
        git \
        build-essential \
        cmake \
        python3 \
        python3-pip \
        wget \
        && rm -rf /var/lib/apt/lists/*

# Ensure python binary exists for shader scripts (some scripts expect 'python')
RUN ln -s /usr/bin/python3 /usr/bin/python || true

# Install Node.js 18.x (LTS) using NodeSource
RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash - && \
    apt-get update && \
    apt-get install -y --no-install-recommends nodejs && \
    rm -rf /var/lib/apt/lists/*

# Work directory
WORKDIR /workspace

# Make sure OpenSSL legacy provider is available for webpack builds on newer Node
ENV NODE_OPTIONS=--openssl-legacy-provider

# Copy package manifests first to leverage caching
COPY package.json yarn.lock* ./

# Install npm/yarn dependencies
RUN npm install -g yarn && \
    yarn install --frozen-lockfile

# Copy the rest of the source
COPY . .

# Build the project (this will also build shaders via the included scripts)
RUN yarn build:all


# Stage 2: Lightweight runtime image that serves the built artifacts
FROM node:18-bullseye-slim AS runtime

WORKDIR /workspace

# Copy built artifacts from the build stage
COPY --from=build /workspace/dist /workspace/dist

# Install a lightweight static server
RUN npm install -g http-server

# Expose a convenient port for the static server
EXPOSE 8080

# Serve the built distribution using a tiny static HTTP server
CMD ["http-server", "dist", "-p", "8080", "-c", "-1"]