simplify config, update guide

.devcontainer/devcontainer.json

@@ -2,9 +2,6 @@
   "name": "pallets/flask",
   "image": "mcr.microsoft.com/devcontainers/python:3",
   "customizations": {
-    "codespaces": {
-      "openFiles": []
-    },
     "vscode": {
       "settings": {
         "python.defaultInterpreterPath": "${workspaceFolder}/.venv",
@@ -12,10 +9,9 @@
         "python.terminal.launchArgs": [
           "-X",
           "dev"
-        ],
-        "terminal.integrated.environmentChangesRelaunch": false
+        ]
       }
     }
   },
-  "onCreateCommand": "sudo chmod +x .devcontainer/on-create-command.sh && .devcontainer/on-create-command.sh"
+  "onCreateCommand": ".devcontainer/on-create-command.sh"
 }

.devcontainer/on-create-command.sh

@@ -3,8 +3,7 @@ set -e
 
 python3 -m venv .venv
 . .venv/bin/activate
-pip install --upgrade pip setuptools
-pip install -r requirements/dev.txt && pip install -e .
-pre-commit install
-
-sudo cp .devcontainer/welcome-message.txt /usr/local/etc/vscode-dev-containers/first-run-notice.txt
+pip install -U pip setuptools wheel
+pip install -r requirements/dev.txt
+pip install -e .
+pre-commit install --install-hooks

.devcontainer/welcome-message.txt

@@ -1,7 +0,0 @@
-👋  Welcome to "Flask" in GitHub Codespaces!
-
-🛠️  Your environment is setup with all the required dependencies and your fork has been added as a remote.
-
-🚀  To start coding:
-    - make sure the virtualenv is activated by running `. .venv/bin/activate`
-    - run `git checkout -b your-branch-name origin/{main-or-latest-release}` to start working on a new feature or bug fix

CONTRIBUTING.rst

@@ -70,24 +70,18 @@ Include the following in your patch:
 First time setup using GitHub Codespaces
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-`GitHub Codespaces`_ allow you to create an instant and dedicated
-development environment. Codespaces open by default in Visual Studio
-Code for the Web, but also work in the desktop app. Codespaces created
-from Flask are configured with a `devcontainer`_ that installs required
-dependencies for you.
+`GitHub Codespaces`_ creates a development environment that is already set up for the
+project. By default it opens in Visual Studio Code for the Web, but this can
+be changed in your GitHub profile settings to use Visual Studio Code or JetBrains
+PyCharm on your local computer.
 
 -   Make sure you have a `GitHub account`_.
--   From the Flask repository page, click the green "Code" button and
-    then "Create codespace on main".
--   Wait for the codespace to load and the ``postCreateCommand`` to
-    finish running.
--   Run the following command to activate the python virtualenv.
-
-    .. code-block:: text
-
-        $ . .venv/bin/activate
-
--   Checkout a branch and `start coding`_.
+-   From the project's repository page, click the green "Code" button and then "Create
+    codespace on main".
+-   The codespace will be set up, then Visual Studio Code will open. However, you'll
+    need to wait a bit longer for the Python extension to be installed. You'll know it's
+    ready when the terminal at the bottom shows that the virtualenv was activated.
+-   Check out a branch and `start coding`_.
 
 .. _GitHub Codespaces: https://docs.github.com/en/codespaces
 .. _devcontainer: https://docs.github.com/en/codespaces/setting-up-your-project-for-codespaces/adding-a-dev-container-configuration/introduction-to-dev-containers