Use crosschain top-level dir context for docker build

Author: merolish

apps/hip-3-pusher/Dockerfile

@@ -13,19 +13,19 @@ ENV UV_LINK_MODE=copy
 # Ensure installed tools can be executed out of the box
 ENV UV_TOOL_BIN_DIR=/usr/local/bin
 
-COPY uv.lock .
-COPY pyproject.toml .
+COPY apps/hip-3-pusher/uv.lock .
+COPY apps/hip-3-pusher/pyproject.toml .
 
 # Install the project's dependencies using the lockfile and settings
 RUN --mount=type=cache,target=/root/.cache/uv \
-    --mount=type=bind,source=uv.lock,target=uv.lock \
-    --mount=type=bind,source=pyproject.toml,target=pyproject.toml \
+    --mount=type=bind,source=apps/hip-3-pusher/uv.lock,target=uv.lock \
+    --mount=type=bind,source=apps/hip-3-pusher/pyproject.toml,target=pyproject.toml \
     uv sync --locked --no-install-project --no-dev
 
 # Then, add the rest of the project source code and install it
 # Installing separately from its dependencies allows optimal layer caching
-COPY src/ ./src/
-COPY config/ ./config/
+COPY apps/hip-3-pusher/src/ ./src/
+COPY apps/hip-3-pusher/config/ ./config/
 RUN --mount=type=cache,target=/root/.cache/uv \
     uv sync --locked --no-dev