Devcontainer: Add a Fedora 41 devcontainer for use in CI

Author: https://github.com/ADKaster
Commit: https://github.com/LadybirdBrowser/ladybird/commit/35b636acb3b
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3086

.devcontainer/fedora-ci/devcontainer.json

@@ -0,0 +1,31 @@
+// For format details, see https://aka.ms/devcontainer.json.
+{
+    "name": "Fedora CI",
+    // Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+    "build": {
+        "context": ".",
+        "dockerfile": "Dockerfile",
+        "args": {
+            "VERSION": "${localEnv:VERSION:41}"
+        }
+    },
+
+    // Features to add to the dev container. More info: https://containers.dev/features.
+    "features": {
+        "ghcr.io/devcontainers/features/common-utils:2": {},
+        "../features/ladybird" : {
+            "distro": "fedora"
+        }
+    },
+
+    // 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": "uname -a",
+
+    // Configure tool-specific properties.
+
+    // Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+    "remoteUser": "vscode"
+}