Add dockerignore file and update dockerfile to copy all files.

Dockerfile

@@ -3,14 +3,10 @@ FROM python:3.12.3-slim
 # install uv
 COPY --from=ghcr.io/astral-sh/uv:0.6.5 /uv /uvx /bin/
 
-WORKDIR /home
-
-COPY config.py config.py
-COPY main.py main.py
-COPY pyproject.toml pyproject.toml
-
-COPY cogs cogs/
+COPY . /${REPO_NAME}
 
+# Sync the project into a new environment, using the frozen lockfile
+WORKDIR /${REPO_NAME}
 RUN uv sync --frozen --no-dev
 
 CMD ["uv", "run", "./main.py"]