Fix docker

Dockerfile

@@ -1,13 +1,9 @@
-FROM python:3.8-slim AS compile-image
+FROM python:3.8-slim AS cirq_base
 
 # Install dependencies.
 # rm -rf /var/lib/apt/lists/* cleans up apt cache. See https://docs.docker.com/develop/develop-images/dockerfile_best-practices/
 RUN DEBIAN_FRONTEND=noninteractive apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
      python3-pip \
-     python3-tk \
-     texlive-latex-base \
-     latexmk \
-     git \
      locales \
      && rm -rf /var/lib/apt/lists/*
 
@@ -21,28 +17,10 @@ ENV LC_ALL en_US.UTF-8
 # Make python3 default
 RUN rm -f /usr/bin/python \
      && ln -s /usr/bin/python3 /usr/bin/python
-
-# Create a virtual enironment to copy over into
-# the final docker image
-RUN python -m venv /opt/venv
-ENV PATH="/opt/venv/bin:$PATH"
-
-# Copy current folder instead of cloning.
-COPY ./ .
-COPY requirements.txt .
-COPY ./cirq/contrib/contrib-requirements.txt .
-COPY ./dev_tools/conf/pip-list-dev-tools.txt .
-
-RUN pip3 install -r requirements.txt -r contrib-requirements.txt -r pip-list-dev-tools.txt
-
-# Install cirq
+#cirq stable image
+FROM cirq_base AS cirq_stable
 RUN pip3 install cirq
 
-FROM python:3.8-slim AS build-image
-COPY --from=compile-image /opt/venv /opt/venv
-
-# Make sure scripts in .local are usable:
-ENV PATH="/opt/venv/bin:$PATH"
-
-WORKDIR /Cirq
-EXPOSE 8888
+##cirq pre_release image
+FROM cirq_base AS cirq_pre_release
+RUN pip3 install cirq --pre

dev_tools/docker_test.py

@@ -0,0 +1,39 @@
+import subprocess
+import pathlib
+import platform
+import pytest
+
+
+def test_docker_stable():
+    if platform.system() != 'Linux':
+        pytest.skip("Unsupported os")
+    root_folder = pathlib.Path(__file__).parent.parent
+    buildResult = subprocess.run(
+        ['docker', 'build', '--target', 'cirq_stable', '-t', 'cirq_image', '.'], cwd=root_folder
+    )
+    assert buildResult.returncode == 0
+
+    result = subprocess.run(
+        ['docker run cirq_image python -c "import cirq; assert cirq.__version__ is not None"'],
+        cwd=root_folder,
+        shell=True,
+    )
+    assert result.returncode == 0
+
+
+def test_docker_pre():
+    if platform.system() != 'Linux':
+        pytest.skip("Unsupported os")
+    root_folder = pathlib.Path(__file__).parent.parent
+    buildResult = subprocess.run(
+        ['docker', 'build', '--target', 'cirq_pre_release', '-t', 'cirq_image_pre', '.'],
+        cwd=root_folder,
+    )
+    assert buildResult.returncode == 0
+
+    result = subprocess.run(
+        ['docker run cirq_image_pre python -c "import cirq; assert cirq.__version__ is not None"'],
+        cwd=root_folder,
+        shell=True,
+    )
+    assert result.returncode == 0

docs/dev/development.md

@@ -24,13 +24,17 @@ git config blame.ignoreRevsFile .git-blame-ignore-revs
 Note that if you are using PyCharm, you might have to Restart & Invalidate Caches to have the change being picked up. 
 
 ## Docker
+ You can build the stable and pre_release docker images with our `Dockerfile`.
 
-To do your development in a Docker image, you can build one with our `Dockerfile`.
 ```bash
-    docker build -t cirq .
-    docker run -it cirq python -c "import cirq; print(cirq.google.Foxtail)"
+    docker build -t cirq --target cirq_stable .
+    docker run -it cirq python -c "import cirq_google; print(cirq_google.Foxtail)"
 ```
 
+```bash
+    docker build -t cirq_pre --target cirq_pre_release .
+    docker run -it cirq_pre python -c "import cirq_google; print(cirq_google.Foxtail)"
+```
 
 If you want to contribute changes to Cirq, you will instead want to fork the repository and submit pull requests from your fork.