Add initial setup commands to post-create-command.sh

.devcontainer/devcontainer.json

@@ -5,14 +5,11 @@
 	// Features to add to the dev container. More info: https://containers.dev/features.
 	// "features": {},
 
-	// Use 'forwardPorts' to make a list of ports inside the container available locally.
-	// "forwardPorts": [],
-
-	// Use 'postCreateCommand' to run commands after the container is created.
+	// Runs the initial setup commands after the container is created.
 	"postCreateCommand": ".devcontainer/post-create-command.sh"
 
-    // Use 'postStartCommand' to run commands after the container is started.
-	// "postStartCommand": ". .venv/bin/activate",
+    // Activates the virtual environment after the container is started.
+	// "postStartCommand": ". .venv/bin/activate"
 
 	// Configure tool-specific properties.
 	// "customizations": {},

.devcontainer/post-create-command.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# Add user's fork as a remote
+GIT_USER=$(git config user.name)
+git remote add fork https://github.com/${GIT_USER}/flask
+
+# Create and activate a virtualenv
+python3 -m venv .venv
+. .venv/bin/activate
+
+# Upgrade pip and setuptools
+python -m pip install --upgrade pip setuptools
+
+# Install the development dependencies, then install Flask in editable mode
+pip install -r requirements/dev.txt && pip install -e .
+
+# Install pre-commit hooks
+pre-commit install
+
+# Install coverage
+pip install coverage