Add helpful CLI utilities

bin/,di

@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+import os
+from pathlib import Path
+import tempfile
+import shutil
+import subprocess
+
+
+DOCKERFILE_TEXT = """
+FROM busybox
+COPY . /build-context
+WORKDIR /build-context
+CMD find .
+"""
+
+def dockerignore_check(args):
+    ignore_file = Path(args.file)
+
+    if not ignore_file.exists():
+        print(f"Dockerignore file {ignore_file} doesn't exist.")
+
+    with tempfile.TemporaryDirectory() as td:
+        dpath = Path(td)
+
+        docker_path = dpath / "Dockerfile"
+        ignore_path = dpath / "Dockerfile.dockerignore"
+        docker_path.write_text(DOCKERFILE_TEXT)
+        shutil.copyfile(ignore_file, ignore_path)
+
+        env = os.environ.copy()
+        env["DOCKER_BUILDKIT"] = "1"
+        subprocess.run(
+            f"docker image build --no-cache -t dockerignore-build-context -f {docker_path} .".split(),
+            env=env,
+            stdout=subprocess.DEVNULL,
+            stderr=subprocess.DEVNULL,
+        )
+
+        subprocess.run(
+            "docker run -it --rm dockerignore-build-context".split(),
+            env=env,
+        )
+
+        subprocess.run(
+            "docker image rm dockerignore-build-context".split(),
+            env=env,
+            stdout=subprocess.DEVNULL,
+            stderr=subprocess.DEVNULL,
+        )
+
+
+
+if __name__ == "__main__":
+    import argparse
+    parser = argparse.ArgumentParser(
+        ",di",
+        description="Shows all files in a project seen by Docker after applying an ignore file.",
+    )
+    parser.add_argument("file")
+    args = parser.parse_args()
+    dockerignore_check(args)

bin/,nixup

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+
+pushd $SCRIPT_DIR/../nix &> /dev/null
+home-manager switch --flake ".#std"