fix: ubi image build should support multi arch builds (#2655)

Signed-off-by: Tomer Figenblat <[email protected]>
Co-authored-by: Don Browne <[email protected]>

Author: TomerFi

cmd/thv-operator/Taskfile.yml

@@ -364,9 +364,11 @@ tasks:
       SHA:  
         sh: git rev-parse HEAD || echo "unknown"
       REPO: '{{.REPO | default "ghcr.io/stacklok/toolhive"}}'
+      PLATFORM:
+        sh: echo "${PLATFORM:-linux/$(go env GOARCH)}" 
     cmds:
       - >
-        eval "{{.CONTAINER_RUNTIME}} build --load
+        eval "{{.CONTAINER_RUNTIME}} build --platform={{.PLATFORM}} --load
         -t {{.REPO}}/thv-operator:{{.SHA}}-ubi
         --build-arg CODEDIR=cmd/thv-operator
         --build-arg VERSION={{.SHA}}-ubi
@@ -386,9 +388,11 @@ tasks:
       SHA:  
         sh: git rev-parse HEAD || echo "unknown"
       REPO: '{{.REPO | default "ghcr.io/stacklok/toolhive"}}'
+      PLATFORM:
+        sh: echo "${PLATFORM:-linux/$(go env GOARCH)}"
     cmds:
       - >
-        eval "{{.CONTAINER_RUNTIME}} build --load
+        eval "{{.CONTAINER_RUNTIME}} build --platform={{.PLATFORM}} --load
         -t {{.REPO}}/thv-proxyrunner:{{.SHA}}-ubi
         --build-arg CODEDIR=cmd/thv-proxyrunner
         --build-arg VERSION={{.SHA}}-ubi

containers/operator/Dockerfile

@@ -26,10 +26,10 @@ RUN CGO_ENABLED=0 LDFLAGS="-s -w \
 -X github.com/stacklok/toolhive/pkg/versions.Commit=${COMMIT} \
 -X github.com/stacklok/toolhive/pkg/versions.BuildDate=${BUILD_DATE} \
 -X github.com/stacklok/toolhive/pkg/versions.BuildType=release" \
-GOOS=linux GOARCH=amd64 go build -ldflags "${LDFLAGS}" -o main ./${CODEDIR}/main.go
+go build -ldflags "${LDFLAGS}" -o main ./${CODEDIR}/main.go
 
-# Use micro base image to package the binary
-FROM  --platform=linux/amd64 registry.access.redhat.com/ubi10/ubi-minimal:10.1-1763362715
+# Use minimal base image to package the binary
+FROM registry.access.redhat.com/ubi10/ubi-minimal:10.1-1763362715
 
 COPY --from=builder /workspace/main /
 COPY LICENSE /licenses/LICENSE