Merge pull request #8 from microsoft/clantz/1.41

Updates for 1.41 release

.devcontainer/Dockerfile

@@ -8,27 +8,39 @@ FROM python:3
 # Avoid warnings by switching to noninteractive
 ENV DEBIAN_FRONTEND=noninteractive
 
-# Or your actual UID, GID on Linux if not the default 1000
+# This Dockerfile adds a non-root user with sudo access. Use the "remoteUser"
+# property in devcontainer.json to use it. On Linux, the container user's GID/UIDs
+# will be updated to match your local UID/GID (when using the dockerFile property).
+# See https://aka.ms/vscode-remote/containers/non-root-user for details.
 ARG USERNAME=vscode
 ARG USER_UID=1000
 ARG USER_GID=$USER_UID
 
+# Uncomment the following COPY line and the corresponding lines in the `RUN` command if you wish to
+# include your requirements in the image itself. It is suggested that you only do this if your
+# requirements rarely (if ever) change.
+# COPY requirements.txt /tmp/pip-tmp/
+
 # Configure apt and install packages
 RUN apt-get update \
     && apt-get -y install --no-install-recommends apt-utils dialog 2>&1 \
     #
     # Verify git, process tools, lsb-release (common in install instructions for CLIs) installed
-    && apt-get -y install git procps lsb-release \
+    && apt-get -y install git iproute2 procps lsb-release \
     #
     # Install pylint
     && pip --disable-pip-version-check --no-cache-dir install pylint \
     #
+    # Update Python environment based on requirements.txt
+    # && pip --disable-pip-version-check --no-cache-dir install -r /tmp/pip-tmp/requirements.txt \
+    # && rm -rf /tmp/pip-tmp \
+    #
     # Create a non-root user to use if preferred - see https://aka.ms/vscode-remote/containers/non-root-user.
     && groupadd --gid $USER_GID $USERNAME \
     && useradd -s /bin/bash --uid $USER_UID --gid $USER_GID -m $USERNAME \
-    # [Optional] Add sudo support for non-root user
+    # [Optional] Add sudo support for the non-root user
     && apt-get install -y sudo \
-    && echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME \
+    && echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME\
     && chmod 0440 /etc/sudoers.d/$USERNAME \
     #
     # Clean up
@@ -37,6 +49,6 @@ RUN apt-get update \
     && rm -rf /var/lib/apt/lists/*
 
 # Switch back to dialog for any ad-hoc use of apt-get
-ENV DEBIAN_FRONTEND=
+ENV DEBIAN_FRONTEND=dialog
 
 

.devcontainer/devcontainer.json

@@ -1,29 +1,29 @@
 {
-	"name": "Python Sample",
+	"name": "Python 3",
+	"context": "..",
 	"dockerFile": "Dockerfile",
 
-	// Use 'appPort' to create a container with published ports. If the port isn't working, be sure
-	// your server accepts connections from all interfaces (0.0.0.0 or '*'), not just localhost.
-	// In this case, "--host 0.0.0.0 --port 9000" needs to be passed into Flask to make this happen.
-	"appPort": [9000],
-
-	// Comment out the next line to run as root instead. Linux users, 
-	// update Dockerfile with your user's UID/GID if not 1000.
-	"runArgs": ["-u", "vscode"],
-
 	// Use 'settings' to set *default* container specific settings.json values on container create. 
 	// You can edit these settings after create using File > Preferences > Settings > Remote.
 	"settings": { 
 		"terminal.integrated.shell.linux": "/bin/bash",
 		"python.pythonPath": "/usr/local/bin/python",
+		"python.linting.enabled": true,
 		"python.linting.pylintEnabled": true,
-		"python.linting.pylintPath": "/usr/local/bin/pylint",
-		"python.linting.enabled": true
+		"python.linting.pylintPath": "/usr/local/bin/pylint"
 	},
 
-	// Specifies a command to run after the container is created
+	// Use 'appPort' to create a container with published ports. If the port isn't working, be sure
+	// your server accepts connections from all interfaces (0.0.0.0 or '*'), not just localhost.
+	"appPort": [ 9000 ],
+
+	// Install flask and any other dependencies
 	"postCreateCommand": "sudo pip install -r requirements.txt",
 
+	// Comment out next line to run as root
+	"remoteUser": "vscode",
+
+	// Add the IDs of extensions you want installed when the container is created in the array below.
 	"extensions": [
 		"ms-python.python"
 	]

README.md

@@ -10,25 +10,34 @@ Follow these steps to open this sample in a container:
 
 1. If this is your first time using a development container, please follow the [getting started steps](https://aka.ms/vscode-remote/containers/getting-started).
 
-2. **Linux users:** Update `USER_UID` and `USER_GID` in `.devcontainer/Dockerfile` with your user UID/GID if not 1000 to avoid creating files as root.
+2. To use this repository, you can either open a locally cloned copy of the code:
 
-3. If you're not yet in a development container:
-   - Clone this repository.
+   - Clone this repository to your local filesystem.
    - Press <kbd>F1</kbd> and select the **Remote-Containers: Open Folder in Container...** command.
    - Select the cloned copy of this folder, wait for the container to start, and try things out!
-   
+
+   Or open the repository in an isolated Docker volume:
+
+    - Press <kbd>F1</kbd> and select the **Remote-Containers: Try a Sample...** command.
+    - Choose the "Python" sample, wait for the container to start and try things out!
+        > **Note:** Under the hood, this will use **Remote-Containers: Open Repository in Container...** command to clone the source code in a Docker volume instead of the local filesystem.   
+
 ## Things to try
 
 Once you have this sample opened in a container, you'll be able to work with it like you would locally. 
 
-> **Note:** This container runs as a non-root user with sudo access by default. Comment out `"runArgs": ["-u", "vscode"]` in `.devcontainer/devcontainer.json` if you'd prefer to run as root.
+> **Note:** This container runs as a non-root user with sudo access by default. Comment out `"remoteUser": "vscode"` in `.devcontainer/devcontainer.json` if you'd prefer to run as root.
 
 Some things to try:
 
 1. **Edit:**
    - Open `app.py`
    - Try adding some code and check out the language features.
-2. **Terminal:** Press <kbd>ctrl</kbd>+<kbd>shift</kbd>+<kbd>\`</kbd> and type `uname` and or other Linux commands from the terminal window.
+2. **Terminal:** 
+    - Press <kbd>ctrl</kbd>+<kbd>shift</kbd>+<kbd>\`</kbd> to open a terminal window.
+    - Type `flask run --host 0.0.0.0 --port 9000 --no-debugger --no-reload` to run the app.
+        > **Note:** It is important to add `--host 0.0.0.0` when using `appPort` in `devcontainer.json` since this uses Docker to "publish" the port rather than forwarding it. It therefore will not work if the application only listens to localhost.
+    - Open a local browser and go to `http://localhost:9000` to see the running app.
 3. **Build, Run, and Debug:**
    - Open `app.py`
    - Add a breakpoint (e.g. on line 9).
@@ -43,6 +52,9 @@ Some things to try:
    - Press <kbd>F1</kbd> and run the **Remote-Containers: Forward Port from Container...** command.
    - Select port 5000.
    - Click "Open Browser" in the notification that appears to access the web app on this new port.
+5. **Run from the command line**
+    - Press <kbd>ctrl</kbd>+<kbd>shift</kbd>+<kbd>\`</kbd> to open a terminal window
+   
 
 ### More samples