Provide a Docker image for building

.circleci/config.yml

@@ -3,7 +3,7 @@ version: 2
 defaults: &defaults
   working_directory: ~/repo
   docker:
-    - image: circleci/python:3.7.0-stretch-browsers
+    - image: registry.hub.docker.com/mdboom/pyodide:0.1.1
 
 jobs:
   build:
@@ -11,42 +11,9 @@ jobs:
     steps:
       - checkout
 
-      - run:
-          name: dependencies
-          command: |
-
-            # We need at least g++-8, but stretch comes with g++-6
-            # Set up the Debian testing repo, and then install g++ from there...
-            sudo bash -c "echo \"deb http://ftp.us.debian.org/debian testing main contrib non-free\" >> /etc/apt/sources.list"
-            sudo apt-get update
-            sudo apt-get install node-less cmake build-essential clang-format-6.0 uglifyjs chromium ccache
-            sudo apt-get install -t testing g++-8
-            sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 60 --slave /usr/bin/g++ g++ /usr/bin/g++-6
-            sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 80 --slave /usr/bin/g++ g++ /usr/bin/g++-8
-            sudo update-alternatives --set gcc /usr/bin/gcc-8
-            sudo ln -s /usr/bin/clang-format-6.0 /usr/bin/clang-format
-
-            # Install Python dependencies
-            sudo pip install virtualenv
-            virtualenv pyodide-env
-            source pyodide-env/bin/activate
-            pip install pytest pytest-xdist pytest-instafail selenium PyYAML flake8
-
-            # Get recent version of Firefox and geckodriver
-            wget -O firefox.tar.bz2 https://download.mozilla.org/\?product\=firefox-latest-ssl\&os\=linux64\&lang\=en-US
-            tar jxf firefox.tar.bz2
-            wget https://github.com/mozilla/geckodriver/releases/download/v0.21.0/geckodriver-v0.21.0-linux64.tar.gz
-            tar zxf geckodriver-v0.21.0-linux64.tar.gz -C firefox
-
-            # Get recent version of chromedriver
-            wget https://chromedriver.storage.googleapis.com/2.41/chromedriver_linux64.zip
-            unzip chromedriver_linux64.zip
-            mv chromedriver pyodide-env/bin/
-
       - run:
           name: lint
           command: |
-            source pyodide-env/bin/activate
             make lint
 
       - restore_cache:
@@ -57,7 +24,6 @@ jobs:
           name: build
           no_output_timeout: 1200
           command: |
-            source pyodide-env/bin/activate
             ccache -z
             make
             ccache -s
@@ -76,9 +42,7 @@ jobs:
           root: .
           paths:
             - ./build
-            - ./pyodide-env
             - ./cpython/build/3.7.0/host
-            - ./firefox
 
       - store_artifacts:
           path: /home/circleci/repo/build/
@@ -92,12 +56,6 @@ jobs:
       - run:
           name: test
           command: |
-            # This Debian is so old, it doesn't know about wasm as a mime type, which then
-            # causes Firefox to complain when loading it.  Let's just add the new mime type.
-            sudo bash -c "echo 'application/wasm wasm' >> /etc/mime.types"
-
-            source pyodide-env/bin/activate
-            export PATH=$PWD/firefox:$PATH
             pytest test -v -k firefox
 
   test-chrome:
@@ -109,11 +67,6 @@ jobs:
       - run:
           name: test
           command: |
-            # This Debian is so old, it doesn't know about wasm as a mime type, which then
-            # causes Firefox to complain when loading it.  Let's just add the new mime type.
-            sudo bash -c "echo 'application/wasm wasm' >> /etc/mime.types"
-
-            source pyodide-env/bin/activate
             pytest test -v -k chrome
 
   benchmark:
@@ -122,22 +75,9 @@ jobs:
       - checkout
       - attach_workspace:
           at: .
-      - run:
-          name: dependencies
-          command: |
-            sudo bash -c "echo \"deb http://ftp.us.debian.org/debian testing main contrib non-free\" >> /etc/apt/sources.list"
-            sudo apt-get update
-            sudo apt-get install -t testing g++-8
-            sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 60 --slave /usr/bin/g++ g++ /usr/bin/g++-6
-            sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 80 --slave /usr/bin/g++ g++ /usr/bin/g++-8
-            sudo update-alternatives --set gcc /usr/bin/gcc-8
       - run:
           name: benchmark
           command: |
-            sudo bash -c "echo 'application/wasm wasm' >> /etc/mime.types"
-
-            source pyodide-env/bin/activate
-            export PATH=$PWD/firefox:$PATH
             python benchmark/benchmark.py cpython/build/3.7.0/host/bin/python3 build/benchmarks.json
       - store_artifacts:
           path: /home/circleci/repo/build/benchmarks.json

Dockerfile

+FROM circleci/python:3.7.0-stretch-browsers
+
+# We need at least g++-8, but stretch comes with g++-6
+# Set up the Debian testing repo, and then install g++ from there...
+RUN sudo bash -c "echo \"deb http://ftp.us.debian.org/debian testing main contrib non-free\" >> /etc/apt/sources.list"
+RUN sudo apt-get update
+RUN sudo apt-get install node-less cmake build-essential clang-format-6.0 uglifyjs chromium ccache
+RUN sudo apt-get install -t testing g++-8
+RUN sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 60 --slave /usr/bin/g++ g++ /usr/bin/g++-6
+RUN sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 80 --slave /usr/bin/g++ g++ /usr/bin/g++-8
+RUN sudo update-alternatives --set gcc /usr/bin/gcc-8
+RUN sudo apt-get clean
+RUN sudo ln -s /usr/bin/clang-format-6.0 /usr/bin/clang-format
+
+RUN sudo pip install pytest pytest-xdist pytest-instafail selenium PyYAML flake8
+
+# Get recent version of Firefox and geckodriver
+RUN sudo wget --quiet -O firefox.tar.bz2 https://download.mozilla.org/\?product\=firefox-latest-ssl\&os\=linux64\&lang\=en-US
+RUN sudo tar jxf firefox.tar.bz2
+RUN sudo rm -f /usr/local/bin/firefox
+RUN sudo ln -s $PWD/firefox/firefox /usr/local/bin/firefox
+RUN sudo wget --quiet https://github.com/mozilla/geckodriver/releases/download/v0.21.0/geckodriver-v0.21.0-linux64.tar.gz
+RUN sudo tar zxf geckodriver-v0.21.0-linux64.tar.gz -C /usr/local/bin
+
+# Get recent version of chromedriver
+RUN sudo wget --quiet https://chromedriver.storage.googleapis.com/2.41/chromedriver_linux64.zip
+RUN sudo unzip chromedriver_linux64.zip
+RUN sudo mv $PWD/chromedriver /usr/local/bin
+
+RUN sudo bash -c "echo 'application/wasm wasm' >> /etc/mime.types"
+
+WORKDIR /src

README.md

@@ -15,7 +15,8 @@ See [the demo](https://iodide.io/pyodide-demo/python.html)
 
 # Building
 
-These instructions were tested on Linux. OSX should be mostly the same.
+Building is easiest on Linux. For other platforms, we recommend using
+the Docker image (described below) to build Pyodide.
 
 Make sure the prerequisites for [emsdk](https://github.com/juj/emsdk) are
 installed. Pyodide will build a custom, patched version of emsdk, so there is no
@@ -33,6 +34,22 @@ Additional build prerequisites are:
 
 `make`
 
+## Using Docker
+
+We provide a Debian-based Docker image on Docker Hub with the dependencies
+already installed to make it easier to build Pyodide.
+
+1. Install Docker
+
+2. From a git checkout of Pyodide, run `./run_docker`
+
+3. cd `/src`
+
+4. Run `make` to build.
+
+You can edit the files in your source checkout on your host machine, and then
+repeatedly run `make` inside the Docker environment to test your changes.
+
 # Testing
 
 Install the following dependencies into the default Python installation:

run_docker

+#!/bin/sh
+docker run -v $PWD:/src --user root -e NB_UID=$UID -e NB_GID+$GID -it registry.hub.docker.com/mdboom/pyodide:0.1.1 /bin/bash