Bump alpine to 3.8

Moving alpine to 3.8 instead of 3.7

Signed-off-by: Martin Dekov (VMware) <[email protected]>

Author: Martin Dekov (VMware)

template/ruby-http/Dockerfile

@@ -1,13 +1,13 @@
-FROM ruby:2.4-alpine3.6
+FROM ruby:2.4-alpine3.8
 
 ARG ADDITIONAL_PACKAGE
 
 # Alternatively use ADD https:// (which will not be cached by Docker builder)
 RUN apk --no-cache add curl ${ADDITIONAL_PACKAGE} \
-    && echo "Pulling watchdog binary from Github." \
-    && curl -sSL https://github.com/openfaas-incubator/of-watchdog/releases/download/0.4.6/of-watchdog > /usr/bin/fwatchdog \
-    && chmod +x /usr/bin/fwatchdog \
-    && apk del curl
+  && echo "Pulling watchdog binary from Github." \
+  && curl -sSL https://github.com/openfaas-incubator/of-watchdog/releases/download/0.4.6/of-watchdog > /usr/bin/fwatchdog \
+  && chmod +x /usr/bin/fwatchdog \
+  && apk del curl
 
 WORKDIR /home/app