diff --git a/README.md b/README.md
index 669051a..f5889ee 100644
--- a/README.md
+++ b/README.md
@@ -52,7 +52,7 @@ Open a Terminal, and - for example - type `bazel build ...` to execute the defau
 After you have build the code, create [compilation databases](https://clang.llvm.org/docs/JSONCompilationDatabase.html) via Visual Studio Code [Task](https://code.visualstudio.com/docs/debugtest/tasks):
 
 - C++: <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>p</kbd> -> `Tasks: Run Task` -> `Update compile_commands.json`
-- Rust: <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>p</kbd> -> `Tasks: Run Task` -> `Generate rust-project.json`
+- Rust: <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>p</kbd> -> `Tasks: Run Task` -> `Update rust-project.json`
 
 These databases are used by Visual Studio Code to support code navigation and auto-completion with the help of [language servers](https://microsoft.github.io/language-server-protocol/).
 
diff --git a/src/s-core-devcontainer/.devcontainer/devcontainer.json b/src/s-core-devcontainer/.devcontainer/devcontainer.json
index 21899af..7cc5b36 100644
--- a/src/s-core-devcontainer/.devcontainer/devcontainer.json
+++ b/src/s-core-devcontainer/.devcontainer/devcontainer.json
@@ -36,6 +36,11 @@
             // from the GitHub release page of buildtools
             // It is generated by running 'sha256sum buildifier-linux-amd64'
             "BUILDIFIER_SHA256": "6ceb7b0ab7cf66fceccc56a027d21d9cc557a7f34af37d2101edb56b92fcfa1a",
+            "STARPLS_VERSION": "0.1.21",
+            // The following sha256sum is for the binary starpls-linux-amd64
+            // from the GitHub release page of starpls
+            // It is generated by running 'sha256sum starpls-linux-amd64'
+            "STARPLS_SHA256": "45692ecb9d94a19a15b1e7b240acdff5702f78cd22188dac41e1879cb8bdcdcf",
             "BAZEL_COMPILE_COMMANDS_VERSION": "0.17.2",
             // The following sha256sums are for the deb package bazel-compile-commands_<version>-<codename>_amd64.deb
             // where <codename> is the Ubuntu codename (e.g., jammy, focal, noble)
@@ -56,14 +61,18 @@
     "customizations": {
         "vscode": {
             "extensions": [
+                "usernamehw.errorlens",
+                "lextudio.restructuredtext",
+                "ms-python.python",
+                "charliermarsh.ruff",
                 "mads-hartmann.bash-ide-vscode",
-                "bazelbuild.vscode-bazel",
+                "bazelbuild.vscode-bazel", // Bazel support for Visual Studio Code; see also bazel.lsp.command below
                 "dbaeumer.vscode-eslint",
                 "EditorConfig.EditorConfig",
-                "ms-vscode.live-server", // for live preview of HTML files
+                "ms-vscode.live-server", // live preview of HTML files
                 "llvm-vs-code-extensions.vscode-clangd",
-                "jebbs.plantuml", //to preview PlantUML diagrams
-                "hediet.vscode-drawio", //for drawio integration
+                "jebbs.plantuml", // preview PlantUML diagrams
+                "hediet.vscode-drawio", // Draw.IO integration
                 "swyddfa.esbonio", // for Sphinx documentation support
                 "rust-lang.rust-analyzer" // Rust language support for Visual Studio Code; see also tasks below
             ],
@@ -79,6 +88,13 @@
                     "--pretty",
                     "--background-index"
                 ],
+                "bazel.lsp.command": "/usr/local/bin/starpls", // use the Starlark Language Server for Bazel projects
+                "bazel.lsp.args": [
+                    "server", // see https://github.com/withered-magic/starpls/issues/400#issuecomment-3095469671 - this is "what developers expect"
+                    "--experimental_infer_ctx_attributes",
+                    "--experimental_use_code_flow_analysis",
+                    "--experimental_enable_label_completions"
+                ],
                 "C_Cpp.intelliSenseEngine": "disabled",
                 "tasks": {
                     "version": "2.0.0",
@@ -103,7 +119,7 @@
                             }
                         },
                         { // see https://bazelbuild.github.io/rules_rust/rust_analyzer.html#vscode
-                            "label": "Generate rust-project.json",
+                            "label": "Update rust-project.json",
                             "command": "bazel",
                             "args": [
                                 "run",
@@ -112,15 +128,7 @@
                             "options": {
                                 "cwd": "${workspaceFolder}"
                             },
-                            "group": "build",
-                            "problemMatcher": [],
-                            "presentation": {
-                                "reveal": "never",
-                                "panel": "dedicated"
-                            },
-                            "runOptions": {
-                                "runOn": "folderOpen"
-                            }
+                            "group": "build"
                         }
                     ]
                 }
diff --git a/src/s-core-devcontainer/.devcontainer/s-core-local/install.sh b/src/s-core-devcontainer/.devcontainer/s-core-local/install.sh
index 8705455..2554a7f 100755
--- a/src/s-core-devcontainer/.devcontainer/s-core-local/install.sh
+++ b/src/s-core-devcontainer/.devcontainer/s-core-local/install.sh
@@ -65,6 +65,11 @@ curl -L "https://github.com/bazelbuild/buildtools/releases/download/v${BUILDIFIE
 echo "${BUILDIFIER_SHA256} /usr/local/bin/buildifier" | sha256sum -c - || exit -1
 chmod +x /usr/local/bin/buildifier
 
+# Starlark Language Server, directly from GitHub (apparently no APT repository available)
+curl -L "https://github.com/withered-magic/starpls/releases/download/v${STARPLS_VERSION}/starpls-linux-amd64" -o /usr/local/bin/starpls
+echo "${STARPLS_SHA256} /usr/local/bin/starpls" | sha256sum -c - || exit -1
+chmod +x /usr/local/bin/starpls
+
 # Code completion for C++ code of Bazel projects
 # (see https://github.com/kiron1/bazel-compile-commands)
 # The version is pinned to a specific release, and the SHA256 checksum is provided by the devcontainer-features.json file.