CI: Add centos8 and ubuntu20 to CI

.circleci/config.yml

@@ -1,14 +1,40 @@
 version: 2
 jobs:
-  build-centos7:
+  build-centos7-baseline:
     docker:
       - image: ossrs/srs:dev
     steps:
       - checkout
       - run: |
-          cd trunk && ./configure && make &&
-          ./configure --nasm=off --srtp-nasm=off && make clean && make &&
-          ./configure --gb28181=on && make clean && make
+          cd trunk && ./configure && make
+  build-centos7-noasm:
+    docker:
+      - image: ossrs/srs:dev
+    steps:
+      - checkout
+      - run: |
+          cd trunk && ./configure --nasm=off --srtp-nasm=off && make
+  build-centos7-gb28181:
+    docker:
+      - image: ossrs/srs:dev
+    steps:
+      - checkout
+      - run: |
+          cd trunk && ./configure --gb28181=on && make
+  build-centos8-baseline:
+    docker:
+      - image: ossrs/srs:dev8
+    steps:
+      - checkout
+      - run: |
+          cd trunk && ./configure && make
+  build-ubuntu20-baseline:
+    docker:
+      - image: ossrs/srs:dev8
+    steps:
+      - checkout
+      - run: |
+          cd trunk && ./configure && make
   test:
     docker:
       - image: ossrs/srs:dev
@@ -22,5 +48,9 @@ workflows:
   version: 2
   build_and_test:
     jobs:
-      - build-centos7
+      - build-centos7-baseline
       - test
+      - build-centos7-noasm
+      - build-centos7-gb28181
+      - build-centos8-baseline
+      - build-ubuntu20-baseline