build: apply core 2.0 compatability

Signed-off-by: Jongmin Kim <whdalsrnt@megazone.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM cloudforet/python-core:1
+FROM cloudforet/python-core:2
 
 ENV PYTHONUNBUFFERED 1
 ENV CLOUDONE_PORT 50051
@@ -10,8 +10,7 @@ RUN apt update && apt upgrade -y
 
 COPY pkg/*.txt ${PKG_DIR}/
 RUN pip install --upgrade pip && \
-    pip install --upgrade --use-deprecated=legacy-resolver -r ${PKG_DIR}/pip_requirements.txt && \
-    pip install --upgrade spaceone-api
+    pip install --upgrade -r ${PKG_DIR}/pip_requirements.txt
 
 COPY src ${SRC_DIR}
 
@@ -22,4 +21,4 @@ RUN python3 setup.py install && \
 EXPOSE ${CLOUDONE_PORT}
 
 ENTRYPOINT ["spaceone"]
-CMD ["grpc", "cloudforet.cost_analysis"]
+CMD ["run", "grpc-server", "cloudforet.cost_analysis"]

src/cloudforet/cost_analysis/interface/grpc/__init__.py

@@ -0,0 +1,11 @@
+from spaceone.core.pygrpc.server import GRPCServer
+from .cost import Cost
+from .job import Job
+from .data_source import DataSource
+
+__all__ = ["app"]
+
+app = GRPCServer()
+app.add_service(DataSource)
+app.add_service(Job)
+app.add_service(Cost)