Bump golang to 1.10.x and alpine to 3.8

**What**
- Bump the base docker image to golang:1.10
- Bump the alpine version to 3.8

Signed-off-by: Lucas Roesler <[email protected]>

Author: LucasRoesler

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.9.7
+FROM golang:1.10
 
 RUN mkdir -p /go/src/github.com/openfaas/faas-netes/
 
@@ -18,7 +18,7 @@ RUN gofmt -l -d $(find . -type f -name '*.go' -not -path "./vendor/*") \
         -X github.com/openfaas/faas-netes/version.Version=${VERSION}" \
         -a -installsuffix cgo -o faas-netes .
 
-FROM alpine:3.7
+FROM alpine:3.8
 
 LABEL org.label-schema.license="MIT" \
       org.label-schema.vcs-url="https://github.com/openfaas/faas-netes" \

Dockerfile.arm64

@@ -1,4 +1,4 @@
-FROM golang:1.9.7 as build
+FROM golang:1.10 as build
 ENV GOPATH=/go/
 RUN mkdir -p /go/src/github.com/openfaas/faas-netes/
 
@@ -15,7 +15,7 @@ RUN gofmt -l -d $(find . -type f -name '*.go' -not -path "./vendor/*") \
     -a -installsuffix cgo -o faas-netes .
 
 
-FROM alpine:3.7
+FROM alpine:3.8
 RUN apk --no-cache add ca-certificates
 WORKDIR /root/
 

Dockerfile.armhf

@@ -1,4 +1,4 @@
-FROM golang:1.9.7 as build
+FROM golang:1.10 as build
 
 RUN mkdir -p /go/src/github.com/openfaas/faas-netes/
 
@@ -13,7 +13,7 @@ RUN VERSION=$(git describe --all --exact-match `git rev-parse HEAD` | grep tags
         -X github.com/openfaas/faas-netes/version.Version=${VERSION}" \
         -a -installsuffix cgo -o faas-netes .
 
-FROM alpine:3.7 as ship
+FROM alpine:3.8 as ship
 
 RUN apk --no-cache add ca-certificates
 WORKDIR /root/