[6.6] b920ea690 Disable building on alpine

[Martin Blix Grydeland]

commit b920ea6901997e0c6c2ed2fd5cf824c56b711245
Author: Martin Blix Grydeland <martin at varnish-software.com>
Date:   Fri Jul 2 15:34:10 2021 +0200

    Disable building on alpine

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 4eb783a6b..1f2562b9c 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -439,22 +439,6 @@ workflows:
           image: centos:8
           ext: rpm
           <<: *pkg_req
-      - package:
-          name: x64-alpine-3
-          dist: alpine
-          release: "3"
-          arch: x64
-          image: alpine:3
-          ext: apk
-          <<: *pkg_req
-      - package:
-          name: aarch64-alpine-3
-          dist: alpine
-          release: "3"
-          arch: aarch64
-          image: arm64v8/alpine:3
-          ext: apk
-          <<: *pkg_req
       - collect_packages:
           requires:
             - x64-ubuntu-xenial
@@ -473,6 +457,3 @@ workflows:
             - aarch64-centos-7
             - x64-centos-8
             - aarch64-centos-8
-            - x64-alpine-3
-            - aarch64-alpine-3
-