Update to latest Alpine base image

Version alpine:3.13 is now available

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

auth/basic-auth/Dockerfile

@@ -26,7 +26,7 @@ RUN CGO_ENABLED=${CGO_ENABLED} GOOS=${TARGETOS} GOARCH=${TARGETARCH} go test -v
 RUN CGO_ENABLED=${CGO_ENABLED} GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build \
     --ldflags "-s -w" -a -installsuffix cgo -o handler .
 
-FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine:3.12 as ship
+FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine:3.13 as ship
 # Add non-root user
 RUN addgroup -S app && adduser -S -g app app \
     && mkdir -p /home/app \

gateway/Dockerfile

@@ -48,7 +48,7 @@ RUN CGO_ENABLED=${CGO_ENABLED} GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build --
     -X github.com/openfaas/faas/gateway/types.Arch=${TARGETARCH}" \
     -a -installsuffix cgo -o gateway .
 
-FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine:3.12 as ship
+FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine:3.13 as ship
 
 LABEL org.label-schema.license="MIT" \
     org.label-schema.vcs-url="https://github.com/openfaas/faas" \

sample-functions/AlpineFunction/Dockerfile

 FROM --platform=${TARGETPLATFORM:-linux/amd64} ghcr.io/openfaas/classic-watchdog:0.1.4 as watchdog
 
-FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine:3.12
+FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine:3.13
 
 COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog
 RUN chmod +x /usr/bin/fwatchdog

sample-functions/CHelloWorld/src/Dockerfile

 FROM openfaas/classic-watchdog:0.18.8 as watchdog
 
-FROM alpine:3.11 as builder
+FROM alpine:3.13 as builder
 COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog
 RUN chmod +x /usr/bin/fwatchdog
 

sample-functions/CaptainsIntent/Dockerfile

 FROM openfaas/classic-watchdog:0.18.8 as watchdog
 
-FROM alpine:3.11
+FROM alpine:3.13
 RUN apk --update add nodejs nodejs-npm
 
 COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog

sample-functions/ChangeColorIntent/Dockerfile

 FROM openfaas/classic-watchdog:0.18.8 as watchdog
 
-FROM alpine:3.11
+FROM alpine:3.13
 RUN apk --update add nodejs nodejs-npm
 
 COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog

sample-functions/DockerHubStats/Dockerfile

@@ -10,7 +10,7 @@ WORKDIR /go/src/github.com/openfaas/faas/sample-functions/DockerHubStats
 COPY . /go/src/github.com/openfaas/faas/sample-functions/DockerHubStats
 RUN set -ex && apk add make && make install
 
-FROM alpine:3.11
+FROM alpine:3.13
 
 # 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:3.11
+FROM alpine:3.13
 
 # Needed to reach the hub
 RUN apk --no-cache add ca-certificates 

sample-functions/MarkdownRender/Dockerfile

@@ -13,7 +13,7 @@ COPY vendor vendor
 
 RUN go install
 
-FROM alpine:3.11
+FROM alpine:3.13
 
 COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog
 RUN chmod +x /usr/bin/fwatchdog

sample-functions/Nmap/Dockerfile

 FROM openfaas/classic-watchdog:0.18.8 as watchdog
 
-FROM alpine:3.11
+FROM alpine:3.13
 
 COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog
 RUN chmod +x /usr/bin/fwatchdog

sample-functions/ResizeImageMagick/Dockerfile.armhf

 FROM openfaas/classic-watchdog:0.18.8 as watchdog
 
-FROM arm32v6/alpine:3.11
+FROM arm32v6/alpine:3.13
 
 RUN apk --no-cache add imagemagick
 

sample-functions/WebhookStash/Dockerfile

@@ -12,7 +12,7 @@ COPY handler.go .
 
 RUN go install
 
-FROM alpine:3.11
+FROM alpine:3.13
 
 COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog
 RUN chmod +x /usr/bin/fwatchdog

sample-functions/hey/Dockerfile

 FROM openfaas/classic-watchdog:0.18.1 as watchdog
 
-FROM alpine:3.11
+FROM alpine:3.13
 
 RUN mkdir -p /home/app