update garm to main branch

docker/garm/Dockerfile

@@ -0,0 +1,28 @@
+FROM golang:1.25-alpine AS build
+
+ARG GARM_COMMIT
+ARG GARM_PROVIDER_K8S_VERSION=0.3.2
+
+RUN apk add --no-cache ca-certificates git wget tar build-base
+
+WORKDIR /src
+RUN git clone https://github.com/cloudbase/garm.git . && git checkout "${GARM_COMMIT}"
+
+RUN CGO_ENABLED=1 GOOS=linux GOARCH=amd64 \
+  go build -trimpath -ldflags="-s -w" \
+  -o /out/garm ./cmd/garm
+
+RUN mkdir -p /out/providers.d \
+  && wget -qO /tmp/garm-provider-k8s.tar.gz "https://github.com/mercedes-benz/garm-provider-k8s/releases/download/v${GARM_PROVIDER_K8S_VERSION}/garm-provider-k8s_Linux_x86_64.tar.gz" \
+  && tar -xzf /tmp/garm-provider-k8s.tar.gz -C /out/providers.d \
+  && chmod 0755 /out/providers.d/garm-provider-k8s
+
+FROM alpine:3.21
+
+RUN apk add --no-cache ca-certificates tzdata && adduser -D -u 65532 nonroot
+
+COPY --from=build /out/garm /bin/garm
+COPY --from=build /out/providers.d/garm-provider-k8s /opt/garm/providers.d/garm-provider-k8s
+
+USER nonroot
+ENTRYPOINT ["/bin/garm"]