Unify devcontainers

Linux / WSL and Docker on Windows use different scripting languages and this shows in the initializeCommand. With this solution the same devcontainer.json file can be used on all platforms, which reduces maintenance costs.

Author: lurtz

.devcontainer/alt_container_docker_on_windows/devcontainer.json

@@ -1,5 +1,8 @@
 {
     "name": "eclipse-s-core",
     "image": "ghcr.io/eclipse-score/devcontainer:latest",
-    "initializeCommand": "mkdir -p ${localEnv:HOME}/.cache/bazel"
+    "initializeCommand": [
+        ".devcontainer/initialize_command",
+        "${localEnv:HOME}"
+    ]
 }

.devcontainer/devcontainer.json

@@ -0,0 +1,6 @@
+#!/bin/sh
+set -eu
+
+# Create Bazel cache directory if it doesn't exist
+home="$1"
+mkdir -p "$home/.cache/bazel"

.devcontainer/initialize_command

@@ -0,0 +1,4 @@
+REM Create Bazel cache directory if it doesn't exist
+
+set home="%1"
+IF not exist "%home%\\.cache\\bazel" ( mkdir "%home%\\.cache\\bazel" )

.devcontainer/initialize_command.cmd

@@ -85,9 +85,6 @@ Camera App ──► [Video Frame] ──┬──► Display App
 > This repository offers a [DevContainer](https://containers.dev/).
 > For setting this up and enabling code completion read [eclipse-score/devcontainer/README.md#inside-the-container](https://github.com/eclipse-score/devcontainer/blob/main/README.md#inside-the-container).
 
->**Note**:
-> If you are using Docker on Windows **without `WSL2`** in between, you have to select the alternative container `eclipse-s-core-docker-on-windows`.
-
 ### Building the Project
 
 ```bash
@@ -141,4 +138,4 @@ We welcome contributions! See our [Contributing Guide](CONTRIBUTING.md) for deta
 
 ---
 
-**Note**: This is an open-source project under the Eclipse Foundation. It implements automotive-grade communication middleware suitable for safety-critical applications.
+**Note**: This is an open-source project under the Eclipse Foundation. It implements automotive-grade communication middleware suitable for safety-critical applications.