Added build script

PongGame/build.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+from argparse import ArgumentParser
+from dataclasses import dataclass
+from pathlib import Path
+
+@dataclass
+class Version:
+    major: int = 1
+    minor: int = 0
+    patch: int = 0
+
+    def __str__(self):
+        return f"{self.major}.{self.minor}.{self.patch}"
+
+    def __init__(self, version_str: str):
+        try:
+            match list(map(int, version_str.split("."))):
+                case [major, minor, patch]:
+                    self.major, self.minor, self.patch = major, minor, patch
+                    return
+                case _:
+                    raise ValueError("Version file must contain 3 parts (SemVer)!")
+        except ValueError as e:
+            raise ValueError(f"Version must contain numbers only!") from e
+
+def parse_args():
+    parser = ArgumentParser("build.py", description="Docker multi-arch build helper.")
+    version_group = parser.add_mutually_exclusive_group()
+    version_group.add_argument("--major", "-m", action="store_true", help="Increase the major version before building.")
+    version_group.add_argument("--minor", "-n", action="store_true", help="Increase the minor version before building.")
+    version_group.add_argument("--patch", "-p", action="store_true", help="Increase the patch version before building.")
+    parser.add_argument("--file", "-f", type=str, default="version.txt", help="File to store the current version in.")
+    return parser.parse_args()
+
+def save_version(version_file: Path, version: Version):
+    with version_file.open("w", encoding="utf-8") as f:
+        f.write(str(version))
+
+def load_version(version_file: Path):
+    try:
+        with version_file.open("r", encoding="utf-8") as f:
+            return Version(f.read().strip())
+    except FileNotFoundError:
+        return Version()
+
+def main():
+    args = parse_args()
+    version_file = Path(args.file)
+    version = load_version(version_file)
+    save_version(version_file, version)
+
+if __name__ == '__main__':
+    main()

PongGame/version.txt

@@ -0,0 +1 @@
+1.0.0