GH-102973: add a dev container (GH-102975)

On content update, builds `python` and the docs. Also adds a Dockerfile that should include everything but autoconf 2.69 that's necessary to build CPython and the entire stdlib on Fedora.

Co-authored-by: Ronald Oussoren <ronaldoussoren@mac.com>
Co-authored-by: Dusty Phillips <dusty@phillips.codes>

.devcontainer/Dockerfile

@@ -0,0 +1,24 @@
+FROM docker.io/library/fedora:37
+
+ENV CC=clang
+
+ENV WASI_SDK_VERSION=19
+ENV WASI_SDK_PATH=/opt/wasi-sdk
+
+ENV WASMTIME_HOME=/opt/wasmtime
+ENV WASMTIME_VERSION=7.0.0
+ENV WASMTIME_CPU_ARCH=x86_64
+
+RUN dnf -y --nodocs install git clang xz python3-blurb dnf-plugins-core && \
+    dnf -y --nodocs builddep python3 && \
+    dnf -y clean all
+
+RUN mkdir ${WASI_SDK_PATH} && \
+    curl --location https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VERSION}/wasi-sdk-${WASI_SDK_VERSION}.0-linux.tar.gz | \
+    tar --strip-components 1 --directory ${WASI_SDK_PATH} --extract --gunzip
+
+RUN mkdir --parents ${WASMTIME_HOME} && \
+    curl --location "https://github.com/bytecodealliance/wasmtime/releases/download/v${WASMTIME_VERSION}/wasmtime-v${WASMTIME_VERSION}-${WASMTIME_CPU_ARCH}-linux.tar.xz" | \
+    xz --decompress | \
+    tar --strip-components 1 --directory ${WASMTIME_HOME} -x && \
+    ln -s ${WASMTIME_HOME}/wasmtime /usr/local/bin

.devcontainer/devcontainer.json

@@ -0,0 +1,75 @@
+{
+    "build": {
+        "dockerfile": "Dockerfile"
+    },
+    "onCreateCommand": [
+        // Install common tooling.
+        "dnf",
+        "install",
+        "-y",
+        "which",
+        "zsh",
+        "fish"
+    ],
+    "updateContentCommand": {
+        // Using the shell for `nproc` usage.
+        "python": "./configure --config-cache --with-pydebug && make -s -j `nproc`",
+        "docs": [
+            "make",
+            "--directory",
+            "Doc",
+            "venv",
+            "html"
+        ]
+    },
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                // Highlighting for Parser/Python.asdl.
+                "brettcannon.zephyr-asdl",
+                // Highlighting for configure.ac.
+                "maelvalais.autoconf",
+                // C auto-complete.
+                "ms-vscode.cpptools",
+                // To view built docs.
+                "ms-vscode.live-server"
+                // https://github.com/microsoft/vscode-python/issues/18073
+                // "ms-python.python"
+            ],
+            "settings": {
+                "C_Cpp.default.cStandard": "c11",
+                "C_Cpp.default.defines": [
+                    "Py_BUILD_CORE"
+                ],
+                // https://github.com/microsoft/vscode-cpptools/issues/10732
+                "C_Cpp.errorSquiggles": "disabled",
+                "editor.insertSpaces": true,
+                "editor.rulers": [
+                    80
+                ],
+                "editor.tabSize": 4,
+                "editor.trimAutoWhitespace": true,
+                "files.associations": {
+                    "*.h": "c"
+                },
+                "files.encoding": "utf8",
+                "files.eol": "\n",
+                "files.insertFinalNewline": true,
+                "files.trimTrailingWhitespace": true,
+                "python.analysis.diagnosticSeverityOverrides": {
+                    // Complains about shadowing the stdlib w/ the stdlib.
+                    "reportShadowedImports": "none",
+                    // Doesn't like _frozen_importlib.
+                    "reportMissingImports": "none"
+                },
+                "python.analysis.extraPaths": [
+                    "Lib"
+                ],
+                "python.defaultInterpreterPath": "./python",
+                "[restructuredtext]": {
+                    "editor.tabSize": 3
+                }
+            }
+        }
+    }
+}

Misc/NEWS.d/next/Build/2023-03-23-20-58-56.gh-issue-102973.EaJUrw.rst

@@ -0,0 +1,2 @@
+Add a dev container (along with accompanying Dockerfile) for development
+purposes.

Tools/wasm/Setup.local.example

@@ -5,6 +5,7 @@ audioop
 _bz2
 _crypt
 _decimal
+nis
 _pickle
 pyexpat _elementtree
 _sha3 _blake2