upgrade to go1.12.9 & alpine3.10

Dockerfile.dapper

-FROM golang:1.12.1-alpine3.9
+FROM golang:1.12.9-alpine3.10
 
 RUN apk -U --no-cache add bash git gcc musl-dev docker vim less file curl wget ca-certificates jq linux-headers zlib-dev tar zip squashfs-tools npm coreutils \
     python3 py3-pip python3-dev openssl-dev libffi-dev libseccomp libseccomp-dev make

Dockerfile.sonobuoy.dapper

-FROM golang:1.12.1-alpine3.9
+FROM golang:1.12.9-alpine3.10
 
 RUN apk -U --no-cache add bash git docker curl jq coreutils
 RUN go get -d github.com/heptio/sonobuoy && \

package/Dockerfile

-FROM alpine:3.9 as base
+FROM alpine:3.10 as base
 RUN apk add -U ca-certificates
 ADD build/out/data.tar.gz /image
 RUN mkdir -p /image/etc/ssl/certs /image/run /image/var/run /image/tmp /image/lib/modules /image/lib/firmware && \
@@ -10,7 +10,7 @@ RUN cd image/bin && \
 FROM scratch
 COPY --from=base /image /
 RUN chmod 1777 /tmp
-VOLUME /var/lib/rancher/k3s 
+VOLUME /var/lib/rancher/k3s
 VOLUME /var/lib/cni
 VOLUME /var/log
 ENV PATH="$PATH:/bin/aux"