Rebuild and modernize Dev Container setup

Author: jgarber623

.devcontainer/devcontainer.json

@@ -1,48 +1,33 @@
 // For format details, see https://aka.ms/devcontainer.json. For config options, see the
 // README at: https://github.com/devcontainers/templates/tree/main/src/ruby
 {
-  "name": "indieweb-endpoints-ruby",
+  "name": "webmention-client-ruby",
   // Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
-  "image": "mcr.microsoft.com/devcontainers/ruby:1-3.3-bookworm",
+  "image": "mcr.microsoft.com/devcontainers/base:1-bookworm",
 
   // Features to add to the dev container. More info: https://containers.dev/features.
   "features": {
-    "ghcr.io/devcontainers-contrib/features/apt-packages:1": {
-      "packages": "less,nano"
+    "ghcr.io/rails/devcontainer/features/ruby:1": {
+      "version": "3.4.3"
     }
   },
 
   // Use 'forwardPorts' to make a list of ports inside the container available locally.
   // "forwardPorts": [],
 
+  // An array of Docker CLI arguments that should be used when running the container.
+  "runArgs": ["--name", "webmention-client-ruby"],
+
   // Use 'postCreateCommand' to run commands after the container is created.
-  "postCreateCommand": "bundle install",
+  "postCreateCommand": ".devcontainer/setup.sh",
 
   // Configure tool-specific properties.
   "customizations": {
-    // Configure properties specific to VS Code.
     "vscode": {
-      // Set *default* container specific settings.json values on container create.
-      "settings": {
-        "rubyLsp:formatter": "none",
-        "rubyLsp.rubyVersionManager": "none"
-      },
       "extensions": [
-        "EditorConfig.EditorConfig",
-        "jasonnutter.vscode-codeowners",
-        "Shopify.ruby-lsp"
+        "EditorConfig.EditorConfig"
       ]
     }
-  },
-
-  // Set or override environment variables for the container.
-  "containerEnv": {
-    "EDITOR": "nano",
-    "LESS": "-FMR",
-    "PAGER": "less",
-    "RUBY_DEBUG_HISTORY_FILE": "${containerWorkspaceFolder}/.rdbg_history",
-    "RUBY_DEBUG_SAVE_HISTORY": "1000",
-    "VISUAL": "code --wait"
   }
 
   // Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.

.devcontainer/setup.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+IFS=$'\n\t'
+set -vx
+
+bundle install