minor changes to make it work with new goreleaser version

goreleaser.yml

@@ -6,7 +6,7 @@ build:
     - windows
   goarch:
     - amd64
-    - 386
+    - i386
     - arm
     - arm64
 archive:
@@ -16,7 +16,7 @@ archive:
     arm: armhf
     arm64: arm64v8
     amd64: amd64
-    386: 386
+    386: i386
     darwin: macOS
     linux: linux
   format_overrides:
@@ -38,13 +38,15 @@ dockers:
       - watchtower
   -
     goos: linux
-    goarch: 386
+    goarch: i386
     goarm: ''
-    binary: watchtower
-    image: v2tec/watchtower
-    dockerfile: dockerfile/386/Dockerfile
-    tag_templates:
-      - '386-{{ .Version }}'
+    dockerfile: dockerfile/i386/Dockerfile
+    build_flag_templates:
+      - "--label=com.centurylinklabs.watchtower=true"
+    image_templates:
+      - containrrr/watchtower:i386-{{ .Version }}
+    binaries:
+      - watchtower
   -
     goos: linux
     goarch: arm