message: Set used Ubuntu builder- and base-images to 1.0
diff: ### At first perform source build ###
  -FROM spectreproject/spectre-builder-ubuntu:latest as build
  +FROM spectreproject/spectre-builder-ubuntu:1.0 as build
  MAINTAINER HLXEasy <hlxeasy@gmail.com>
  # Build parameters
  @@ -18,7 +18,7 @@ RUN cd /spectre \
  && make -j${BUILD_THREADS}
  ### Now package binaries into new image ###
  -FROM spectreproject/spectre-base-ubuntu:latest
  +FROM spectreproject/spectre-base-ubuntu:1.0
  MAINTAINER HLXEasy <hlxeasy@gmail.com>
  COPY --from=build /spectre/src/spectrecoind /usr/local/bin/
  