Merge branch 'use-buster-for-gcc8-build' into 'master'

remove CI build using lalsuite-dev-gcc:8 replace with build on Buster

See merge request lscsoft/lalsuite!2159

.gitlab-ci.yml

@@ -1601,13 +1601,10 @@ upgrade:conda:linux:
     - !reference [.ci-platform, rules]
     - !reference [.ci-merge-build, rules]
 
-platform:debian:bullseye:
+platform:debian:buster:
   extends:
     - .platform-test
-  variables:
-    # disable the octave bindings as the version of SWIG on bullseye doesn't support the version of Octave
-    CONFIGURE_FLAGS: "--enable-doxygen --enable-swig-python --enable-python"
-  image: igwn/lalsuite-dev:bullseye
+  image: igwn/lalsuite-dev:buster
 
 .platform-test:conda:
   extends:

.gitlab/ci/compilers.yml

@@ -78,11 +78,6 @@ gcc:7:
     - .compiler-test:gcc
   image: igwn/lalsuite-dev-gcc:7
 
-gcc:8:
-  extends:
-    - .compiler-test:gcc
-  image: igwn/lalsuite-dev-gcc:8
-
 gcc:9:
   extends:
     - .compiler-test:gcc