test with version numbers

scripts/dockerfiles/Dockerfile.alpine

@@ -2,13 +2,13 @@ ARG GO_VERSION
 FROM golang:$GO_VERSION-alpine3.10 as builder
 # hadolint ignore=DL3018
 RUN addgroup -S agentgroup && adduser -S agentuser -G agentgroup
-RUN apk add --no-cache make gcc libc-dev git curl
+RUN apk add --no-cache make=4.2.1-r2 gcc=8.3.0-r0 libc-dev=0.7.1-r0 git=2.22.5-r0 curl=7.66.0-r4
 WORKDIR /go/src/github.com/optimizely/agent
 COPY . .
 RUN make setup build
 
 FROM alpine:3.10
-RUN apk add --no-cache ca-certificates
+RUN apk add --no-cache cca-certificates=20191127-r2
 COPY --from=builder /go/src/github.com/optimizely/agent/bin/optimizely /optimizely
 COPY --from=builder /etc/passwd /etc/passwd
 USER agentuser