Build package in container multi-stage build to ensure correct versio…

…ning

.dockerignore

@@ -1,2 +1,2 @@
-.*
 Dockerfile
+dist/

dask_kubernetes/operator/deployment/Dockerfile

@@ -1,14 +1,23 @@
 # This images needs to be built from the top level of the project
 # $ docker build -t ghcr.io/dask/dask-kubernetes-operator:latest -f dask_kubernetes/operator/deployment/Dockerfile .
 
-FROM python:3.10
+FROM python:3.10 as builder
 
 # Copy source
 COPY . /src/dask_kubernetes
 WORKDIR /src/dask_kubernetes
 
-# Install dependencies
-RUN pip install .
+# Build dask-kubernetes distribution
+RUN pip install hatch && hatch build
+
+FROM python:3.10
+
+# Copy wheel
+COPY --from=builder /src/dask_kubernetes/dist /src/dask_kubernetes/dist
+WORKDIR /src/dask_kubernetes
+
+# Install from wheel
+RUN pip install /src/dask_kubernetes/dist/dask_kubernetes*.whl
 
 # Add non-root user
 RUN useradd -s /bin/bash dask