update cirrus-ci builds

.cirrus.yml

@@ -27,16 +27,15 @@ linux_task:
     - make STATIC=1 LTO=1
 
 linux_task:
-  name: "centos:6"
+  name: "alpine:3.12"
   container:
-    image: centos:6
+    image: alpine:3.12
     cpu: 4
     memory: 2G
   timeout_in: 10m
   script:
     - tools/install-build-pkgs
-    - make
-    - make rpm
+    - make STATIC=1 LTO=1
 
 linux_task:
   name: "centos:7"
@@ -99,24 +98,21 @@ linux_task:
     - make rpm
 
 linux_task:
-  name: "ubuntu:14.04"
+  name: "fedora:33"
   container:
-    image: ubuntu:14.04
+    image: fedora:33
     cpu: 4
     memory: 2G
   timeout_in: 10m
   script:
     - tools/install-build-pkgs
-    - git fetch
-    - make deb
-    - apt-get -y install fuse
-    - dpkg -i ../*.deb
-    - mergerfs -v || true
+    - make
+    - make rpm
 
 linux_task:
-  name: "ubuntu:16.04"
+  name: "ubuntu:14.04"
   container:
-    image: ubuntu:16.04
+    image: ubuntu:14.04
     cpu: 4
     memory: 2G
   timeout_in: 10m
@@ -129,9 +125,9 @@ linux_task:
     - mergerfs -v || true
 
 linux_task:
-  name: "ubuntu:18.04"
+  name: "ubuntu:16.04"
   container:
-    image: ubuntu:18.04
+    image: ubuntu:16.04
     cpu: 4
     memory: 2G
   timeout_in: 10m
@@ -144,9 +140,9 @@ linux_task:
     - mergerfs -v || true
 
 linux_task:
-  name: "ubuntu:19.10"
+  name: "ubuntu:18.04"
   container:
-    image: ubuntu:19.10
+    image: ubuntu:18.04
     cpu: 4
     memory: 2G
   timeout_in: 10m