Add OCI version labels to Fleet container images (#45981)

.goreleaser-snapshot.yml

@@ -71,5 +71,7 @@ dockers:
       - fleet
       - fleetctl
     dockerfile: tools/fleet-docker/Dockerfile
+    build_flag_templates:
+      - "--build-arg=FLEET_VERSION={{.Version}}"
     image_templates:
       - 'fleetdm/fleet:{{ envOrDefault "DOCKER_IMAGE_TAG" .Branch }}'

.goreleaser.yml

@@ -127,6 +127,8 @@ dockers:
       - fleet
       - fleetctl
     dockerfile: tools/fleet-docker/Dockerfile
+    build_flag_templates:
+      - "--build-arg=FLEET_VERSION={{.Version}}"
     image_templates:
       - "fleetdm/fleet:{{ .Tag }}"
       - "fleetdm/fleet:v{{ .Major }}"

tools/fleet-docker/Dockerfile

@@ -1,5 +1,10 @@
 FROM alpine:3.23.4@sha256:5b10f432ef3da1b8d4c7eb6c487f2f5a8f096bc91145e68878dd4a5019afde11
+ARG FLEET_VERSION=unknown
 LABEL maintainer="Fleet Developers"
+LABEL org.opencontainers.image.version="${FLEET_VERSION}"
+LABEL org.opencontainers.image.vendor="Fleet Device Management Inc."
+LABEL org.opencontainers.image.title="fleet"
+LABEL org.opencontainers.image.source="https://github.com/fleetdm/fleet"
 
 RUN apk --update add ca-certificates
 RUN apk --no-cache add jq