Bumps alpine from 3.9 to 3.12.1. Signed-off-by: dependabot[bot] <support@github.com>
@@ -1,4 +1,4 @@
-FROM alpine:3.9
+FROM alpine:3.12.1
ARG OPENSSH_SERVER_PACKAGE_VERSION=7.9_p1-r6
RUN apk add --no-cache openssh-server=$OPENSSH_SERVER_PACKAGE_VERSION