feat: :whale: Add initial Dockerfile for containerizing application

Includes:
- Python 3.12 as base image
- Copies necessary application files and directories
- Sets working directory to /app
- Runs `uv sync` during build
- Sets default command to run Dagster server on port 3000

Dockerfile

@@ -0,0 +1,14 @@
+FROM python:3.12
+
+COPY --from=ghcr.io/astral-sh/uv:latest /uv /bin/uv
+
+COPY datalia/ /app/datalia/
+COPY dbt/ /app/dbt/
+COPY Makefile pyproject.toml uv.lock /app/
+
+WORKDIR /app
+
+RUN [ "uv", "sync" ]
+
+CMD [ "uv", "run", "dagster", "dev", "-h", "0.0.0.0", "-p", "3000" ]
+# CMD [ "bash" ]