Revert "Drop armv7 support"

This reverts commit 237cee5.

Signed-off-by: Darren Shepherd <darren@acorn.io>

.goreleaser.yml

@@ -13,6 +13,9 @@ builds:
     goarch:
       - amd64
       - arm64
+      - arm
+    goarm:
+      - "7"
     ignore:
       - goos: windows
         goarch: arm64
@@ -127,18 +130,39 @@ dockers:
     extra_files:
       - scripts/ds-containerd-config-path-entry
       - scripts/setup-binfmt
+  - use: buildx
+    goos: linux
+    goarch: arm
+    goarm: "7"
+    dockerfile: Dockerfile
+    image_templates:
+      - ghcr.io/acorn-io/acorn:v{{ .Version }}-arm32v7
+    build_flag_templates:
+      - "--target=goreleaser"
+      - "--pull"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.title={{.ProjectName}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=org.opencontainers.image.source=https://github.com/acorn-io/acorn"
+      - "--platform=linux/arm/v7"
+    extra_files:
+      - scripts/ds-containerd-config-path-entry
+      - scripts/setup-binfmt
 
 docker_manifests:
   - use: docker
     name_template: ghcr.io/acorn-io/acorn:v{{ .Version }}
     image_templates:
       - ghcr.io/acorn-io/acorn:v{{ .Version }}-amd64
       - ghcr.io/acorn-io/acorn:v{{ .Version }}-arm64
+      - ghcr.io/acorn-io/acorn:v{{ .Version }}-arm32v7
   - use: docker
     name_template: ghcr.io/acorn-io/acorn:latest
     image_templates:
       - ghcr.io/acorn-io/acorn:v{{ .Version }}-amd64
       - ghcr.io/acorn-io/acorn:v{{ .Version }}-arm64
+      - ghcr.io/acorn-io/acorn:v{{ .Version }}-arm32v7
 
 docker_signs:
   - artifacts: all