feat: add Docker image build script and update tasks configuration

.vscode/tasks.json

@@ -22,6 +22,15 @@
             ],
             "problemMatcher": "$msCompile",
             "group": "build"
+        },
+        {
+            "label": "Build Docker Image",
+            "type": "shell",
+            "command": "${workspaceFolder}\\.venv\\Scripts\\python.exe",
+            "args": [
+                "${workspaceFolder}/docker/build_image.py"
+            ],
+            "problemMatcher": []
         }
     ]
 }

docker/build_image.py

@@ -0,0 +1,44 @@
+from __future__ import annotations
+
+import datetime as dt
+import subprocess
+from pathlib import Path
+
+
+def get_timestamp_tag(today: dt.date) -> str:
+    year_suffix = today.year % 100
+    day_of_year = today.timetuple().tm_yday
+    return f"{year_suffix}.{day_of_year}"
+
+
+def main() -> int:
+    repo_root = Path(__file__).resolve().parents[1]
+    dockerfile_path = repo_root / "docker" / "Dockerfile"
+
+    today = dt.date.today()
+    timestamp_tag = get_timestamp_tag(today)
+
+    image_name = "troogs/astrain"
+    tags = ["latest", timestamp_tag]
+
+    build_cmd = [
+        "docker",
+        "build",
+        "-f",
+        str(dockerfile_path),
+        "-t",
+        f"{image_name}:{tags[0]}",
+        "-t",
+        f"{image_name}:{tags[1]}",
+        str(repo_root),
+    ]
+
+    print(f"Building Docker image with tags: {', '.join(tags)}")
+    print(" ".join(build_cmd))
+
+    result = subprocess.run(build_cmd, cwd=str(repo_root))
+    return result.returncode
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())