Added docker support

dockerfile

@@ -0,0 +1,19 @@
+### STAGE 1.a: Prepare certs ###
+FROM alpine:latest as certs
+RUN apk --update add ca-certificates
+
+### STAGE 1.b: Build ###
+FROM golang as go-build
+WORKDIR /root
+COPY go.mod go.sum ./
+# install packages
+RUN go mod download
+COPY . .
+ENV CGO_ENABLED=0
+RUN go build -tags timetzdata resource_manager
+
+### Stage 2: Run ###
+FROM scratch
+COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+COPY --from=go-build /root/resource_manager /usr/bin/resource_manager
+ENTRYPOINT ["resource_manager"]