Bug 1970 fixed

Now the Dockerfile.local uses Ubuntu 20.04;
The paths in the format `/[...]/python<version>/[...]` where replaced
with the new Python version (3.8 instead of 3.6)

Change-Id: Iccccecb2bd4f4d8156357dba582b0460987b060f
Signed-off-by: Pedro Escaleira <escaleira@av.it.pt>
diff --git a/Dockerfile.local b/Dockerfile.local
index 2816d0a..04f2d2e 100644
--- a/Dockerfile.local
+++ b/Dockerfile.local
@@ -16,7 +16,7 @@
 
 ########################################################################
 
-FROM ubuntu:18.04 as INSTALL
+FROM ubuntu:20.04 as INSTALL
 
 WORKDIR /build
 
@@ -46,13 +46,13 @@
     python3 -m pip install /build/dist/*.whl
 
 
-FROM ubuntu:18.04 as FINAL
+FROM ubuntu:20.04 as FINAL
 
 RUN DEBIAN_FRONTEND=noninteractive apt-get --yes update && \
     DEBIAN_FRONTEND=noninteractive apt-get --yes install python3-minimal
 
 COPY --from=INSTALL /usr/lib/python3/dist-packages /usr/lib/python3/dist-packages
-COPY --from=INSTALL /usr/local/lib/python3.6/dist-packages  /usr/local/lib/python3.6/dist-packages
+COPY --from=INSTALL /usr/local/lib/python3.8/dist-packages  /usr/local/lib/python3.8/dist-packages
 
 RUN mkdir -p /app/storage/kafka && mkdir -p /app/log
 
@@ -60,9 +60,9 @@
 
 EXPOSE 9999
 
-RUN cp -R /usr/local/lib/python3.6/dist-packages/osm_nbi/html_public /app/osm_nbi/html_public
-RUN cp /usr/local/lib/python3.6/dist-packages/osm_nbi/nbi.cfg /app/osm_nbi/
-RUN cp -R /usr/local/lib/python3.6/dist-packages/osm_nbi/http /app/osm_nbi/
+RUN cp -R /usr/local/lib/python3.8/dist-packages/osm_nbi/html_public /app/osm_nbi/html_public
+RUN cp /usr/local/lib/python3.8/dist-packages/osm_nbi/nbi.cfg /app/osm_nbi/
+RUN cp -R /usr/local/lib/python3.8/dist-packages/osm_nbi/http /app/osm_nbi/
 
 # Used for local storage
 VOLUME /app/storage