refactor: use buildx for multiarch container builds (#12)

.drone.yml

@@ -41,6 +41,7 @@ steps:
       dockerfile: Dockerfile
       dry_run: true
       repo: thegeeklab/${DRONE_REPO_NAME}
+      provenance: false
     when:
       ref:
         - refs/pull/**
@@ -56,6 +57,7 @@ steps:
       repo: thegeeklab/${DRONE_REPO_NAME}
       username:
         from_secret: docker_username
+      provenance: false
     when:
       ref:
         - refs/heads/main
@@ -73,6 +75,7 @@ steps:
       repo: quay.io/thegeeklab/${DRONE_REPO_NAME}
       username:
         from_secret: quay_username
+      provenance: false
     when:
       ref:
         - refs/heads/main
@@ -99,7 +102,6 @@ platform:
 
 steps:
   - name: pushrm-dockerhub
-    pull: always
     image: chko/docker-pushrm:1
     environment:
       DOCKER_PASS:
@@ -114,7 +116,6 @@ steps:
         - success
 
   - name: pushrm-quay
-    pull: always
     image: chko/docker-pushrm:1
     environment:
       APIKEY__QUAY_IO:
@@ -155,6 +156,6 @@ depends_on:
 
 ---
 kind: signature
-hmac: a2b36e194a5eaeb50151d20ef90bcfd12a643b7c6bbe3dc95595443ed2efcf19
+hmac: aeba0fdec0b13d160b6d95e18e3a291333d8d80436c6138395ba449a96ddd93a
 
 ...