fix: Updates dependencies & local development environment

- Updates Composer dependencies to latest versions with support for PHP 8.0.
- Updates NPM dependencies to latest versions with support for Node 16.
- Removes `wp-env` and migrates to a Dev Container for local development.
- Updates linting configuration.
- Updates unit tests to pass linting testings.
- Updates unit testing to use new Dev Container & Docker setup.
- Fixes linting issues.

.devcontainer/activate.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -eu
+
+# Activate the plugin.
+cd "/app"
+echo "Activating plugin..."
+if ! wp plugin is-active woocommerce-local-pickup-time-select 2>/dev/null; then
+	wp plugin activate woocommerce-local-pickup-time-select --quiet
+fi
+
+echo "Done!"

.devcontainer/devcontainer.json

@@ -1,41 +1,71 @@
-// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
-// https://github.com/microsoft/vscode-dev-containers/tree/v0.192.0/containers/docker-in-docker
+// For format details, https://containers.dev/implementors/json_reference/.
 {
-	"name": "Docker in Docker",
-	"dockerFile": "Dockerfile",
-	"runArgs": ["--init", "--privileged"],
-	"mounts": ["source=dind-var-lib-docker,target=/var/lib/docker,type=volume"],
-	"overrideCommand": false,
-
-	// Set *default* container specific settings.json values on container create.
-	"settings": {},
-
-	// Add the IDs of extensions you want installed when the container is created.
-	"extensions": [
-		"ms-azuretools.vscode-docker",
-		"bmewburn.vscode-intelephense-client",
-		"claudiosanches.woocommerce",
-		"ddarkonen.phpstan-larastan",
-		"ecmel.vscode-html-css",
-		"editorconfig.editorconfig",
-		"github.codespaces",
-		"gitpod.gitpod-desktop",
-		"johnbillion.vscode-wordpress-hooks",
-		"ms-vscode-remote.remote-containers",
-		"ms-vscode-remote.remote-ssh",
-		"ms-vscode-remote.remote-ssh-edit",
-		"obliviousharmony.vscode-php-codesniffer"
-	],
-
-	// Use 'forwardPorts' to make a list of ports inside the container available locally.
-	// "forwardPorts": [],
-
-	// Use 'postCreateCommand' to run commands after the container is created.
-	"postCreateCommand": "npm run setup",
-
-	// Use 'postStartCommand' to run commands after the container has started.
-	"postStartCommand": "npm start -- --update",
-
-	// Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
-	"remoteUser": "vscode"
+  "name": "WordPress Development Environment",
+  "dockerComposeFile": "../docker-compose.yml",
+  "service": "app",
+  "mounts": ["source=dind-var-lib-docker,target=/var/lib/docker,type=volume"],
+  "workspaceFolder": "/workspaces/${localWorkspaceFolderBasename}",
+
+  "customizations": {
+    "vscode": {
+      // Set *default* container specific settings.json values on container create.
+      "settings": {},
+
+      // Add the IDs of extensions you want installed when the container is created.
+      "extensions": [
+				"ms-azuretools.vscode-docker",
+				"bmewburn.vscode-intelephense-client",
+				"claudiosanches.woocommerce",
+				"ddarkonen.phpstan-larastan",
+				"ecmel.vscode-html-css",
+				"editorconfig.editorconfig",
+				"github.codespaces",
+				"johnbillion.vscode-wordpress-hooks",
+				"ms-azuretools.vscode-docker",
+				"ms-vscode-remote.remote-containers",
+				"ms-vscode-remote.remote-ssh",
+				"ms-vscode-remote.remote-ssh-edit",
+				"obliviousharmony.vscode-php-codesniffer"
+			]
+		}
+  },
+
+  // Features to add to the dev container. More info: https://containers.dev/features.
+  "features": {
+    "./local-features/welcome-message": "latest"
+  },
+
+  // Use 'forwardPorts' to make a list of ports inside the container available locally.
+  "forwardPorts": [8080, 8081, 8027, 3306],
+
+  // Maps a port number, "host:port" value, range, or regular expression to a set of default options. See port attributes for available options
+  "portsAttributes": {
+    "8080": {
+      "label": "WordPress Development/Testing Site"
+    },
+    "8081": {
+      "label": "phpMyAdmin"
+    },
+    "8027": {
+      "label": "MailHog"
+    },
+    "3306": {
+      "label": "MariaDB"
+    }
+  },
+
+  // Use `onCreateCommand` to run commands as part of the container creation.
+  //"onCreateCommand": "chmod +x .devcontainer/install.sh && .devcontainer/install.sh",
+
+  // Use 'postCreateCommand' to run commands after the container is created.
+  "postCreateCommand": "chmod +x .devcontainer/setup.sh && .devcontainer/setup.sh",
+
+  // Use 'postStartCommand' to run commands after the container has started.
+  "postStartCommand": "cd /app && wp --quiet plugin activate woocommerce-local-pickup-time-select",
+
+  // Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
+  "remoteUser": "wp_php",
+
+  // A set of name-value pairs that sets or overrides environment variables for the devcontainer.json supporting service / tool (or sub-processes like terminals) but not the container as a whole.
+  "remoteEnv": { "LOCAL_WORKSPACE_FOLDER": "${localWorkspaceFolder}" }
 }