Merge pull request #218 from ecordell/release-dockerfile-simplify

simplify release dockerfile

Dockerfile.release

@@ -1,12 +1,14 @@
 # vim: syntax=dockerfile
-FROM alpine:3.13 AS grpc
-ARG TARGETPLATFORM
+FROM alpine AS grpc
+ARG TARGETARCH
 ARG GRPC_HEALTH_PROBE_VERSION=0.3.6
-RUN apk add curl
-RUN curl -v -Lo /etc/grpc_health_probe  "https://github.com/grpc-ecosystem/grpc-health-probe/releases/download/v${GRPC_HEALTH_PROBE_VERSION}/grpc_health_probe-$(echo $TARGETPLATFORM | tr / -)"
-RUN chmod +x /etc/grpc_health_probe
+RUN apk update && \
+	apk add curl && \
+	curl -Lo /grpc_health_probe \
+	https://github.com/grpc-ecosystem/grpc-health-probe/releases/download/v$GRPC_HEALTH_PROBE_VERSION/grpc_health_probe-linux-$TARGETARCH && \
+	chmod +x /grpc_health_probe
 
 FROM gcr.io/distroless/base
-COPY --from=grpc /etc/grpc_health_probe /usr/local/bin/grpc_health_probe
+COPY --from=grpc /grpc_health_probe /usr/local/bin/grpc_health_probe
 COPY spicedb /usr/local/bin/spicedb
 ENTRYPOINT ["spicedb"]