Bump files to use alpine:3.8

Bump Dockerfiles and mentions of alpine 3.7 to be now
3.8

Signed-off-by: Martin Dekov (VMware) <mdekov@vmware.com>

sample-functions/AlpineFunction/Dockerfile.arm64

@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8
 
 RUN apk --no-cache add curl \
     && curl -sL https://github.com/openfaas/faas/releases/download/0.9.6/fwatchdog-arm64 > /usr/bin/fwatchdog \

sample-functions/ApiKeyProtected-Secrets/Dockerfile

@@ -14,7 +14,7 @@ COPY handler.go .
 
 RUN go install
 
-FROM alpine:3.7
+FROM alpine:3.8
 
 # Needed to reach the hub
 RUN apk --no-cache add ca-certificates 

sample-functions/CHelloWorld/src/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.7 as builder
+FROM alpine:3.8 as builder
 RUN apk add --no-cache curl \
     && curl -SL https://github.com/openfaas/faas/releases/download/0.9.6/fwatchdog > /usr/bin/fwatchdog \
     && chmod +x /usr/bin/fwatchdog \
@@ -7,12 +7,12 @@ RUN apk add --no-cache curl \
 WORKDIR /root/
 
 RUN apk add --no-cache gcc \
-                       musl-dev
+    musl-dev
 COPY main.c     .
 
 RUN gcc main.c -static -o /main \
- && chmod +x /main \
- && /main
+    && chmod +x /main \
+    && /main
 
 FROM scratch
 

sample-functions/CaptainsIntent/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8
 RUN apk --update add nodejs nodejs-npm
 
 RUN apk --no-cache add curl \

sample-functions/ChangeColorIntent/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8
 RUN apk --update add nodejs nodejs-npm
 
 RUN apk --no-cache add curl \

sample-functions/DockerHubStats/Dockerfile

@@ -13,7 +13,7 @@ COPY . /go/src/github.com/openfaas/faas/sample-functions/DockerHubStats
 
 RUN make install
 
-FROM alpine:3.7
+FROM alpine:3.8
 
 # Needed to reach the hub
 RUN apk --no-cache add ca-certificates 

sample-functions/DockerHubStats/Dockerfile.armhf

@@ -13,7 +13,7 @@ COPY . /go/src/github.com/openfaas/faas/sample-functions/DockerHubStats
 
 RUN make install
 
-FROM alpine:3.7
+FROM alpine:3.8
 
 # Needed to reach the hub
 RUN apk --no-cache add ca-certificates 

sample-functions/HostnameIntent/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8
 RUN apk --update add nodejs nodejs-npm
 
 RUN apk --no-cache add curl \

sample-functions/MarkdownRender/Dockerfile

@@ -14,7 +14,7 @@ COPY vendor vendor
 
 RUN go install
 
-FROM alpine:3.7
+FROM alpine:3.8
 
 # Needed to reach the hub
 RUN apk --no-cache add ca-certificates 

sample-functions/NodeInfo/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8
 
 RUN apk --update add nodejs nodejs-npm
 

sample-functions/NodeInfo/Dockerfile.arm64

@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8
 
 RUN apk --update add nodejs nodejs-npm
 

sample-functions/NodeInfo/Dockerfile.armhf

@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8
 RUN apk --no-cache add nodejs nodejs-npm
 
 RUN apk --no-cache add curl \

sample-functions/ResizeImageMagick/Dockerfile.armhf

@@ -1,4 +1,4 @@
-FROM arm32v6/alpine:3.7
+FROM arm32v6/alpine:3.8
 
 RUN apk --no-cache add imagemagick
 

sample-functions/WebhookStash/Dockerfile

@@ -14,7 +14,7 @@ COPY handler.go .
 
 RUN go install
 
-FROM alpine:3.7
+FROM alpine:3.8
 
 # Needed to reach the hub
 RUN apk --no-cache add ca-certificates 

sample-functions/figlet/Dockerfile.armhf

@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8
 
 RUN apk --no-cache add curl \
     && curl -sL https://github.com/openfaas/faas/releases/download/0.9.6/fwatchdog-armhf > /usr/bin/fwatchdog \

sample-functions/gif-maker/Dockerfile

@@ -1,9 +1,9 @@
-FROM alpine:3.7
+FROM alpine:3.8
 
 RUN apk --no-cache add ffmpeg gifsicle curl \
-   && curl -LS https://github.com/openfaas/faas/releases/download/0.9.6/fwatchdog > /usr/bin/fwatchdog \
-   && chmod +x /usr/bin/fwatchdog \
-   && apk del curl
+    && curl -LS https://github.com/openfaas/faas/releases/download/0.9.6/fwatchdog > /usr/bin/fwatchdog \
+    && chmod +x /usr/bin/fwatchdog \
+    && apk del curl
 WORKDIR /root/
 COPY entry.sh   .
 ENV fprocess="./entry.sh"