CI: use golang:alpine3.13 as builder/base to prevent make errors (cs3…

…org#1844)

Dockerfile.reva

@@ -16,7 +16,7 @@
 # granted to it by virtue of its status as an Intergovernmental Organization
 # or submit itself to any jurisdiction.
 
-FROM golang:alpine as builder
+FROM golang:alpine3.13 as builder
 
 RUN apk --no-cache add \
   ca-certificates \

Dockerfile.revad

@@ -16,7 +16,7 @@
 # granted to it by virtue of its status as an Intergovernmental Organization
 # or submit itself to any jurisdiction.
 
-FROM golang:alpine as builder
+FROM golang:alpine3.13 as builder
 
 RUN apk --no-cache add \
   ca-certificates \
@@ -36,7 +36,7 @@ RUN make build-revad-docker && \
 
 RUN mkdir -p /etc/revad/ && echo "" > /etc/revad/revad.toml
 
-FROM golang:alpine
+FROM golang:alpine3.13
 
 RUN apk --no-cache add \
   mailcap

changelog/unreleased/ci-fix-reva-dockerfile-path.md

@@ -1,6 +1,11 @@
-Bugfix: use the right Dockerfile path for the reva CLI
+Bugfix: correct Dockerfile path for the reva CLI and alpine3.13 as builder
 
 This was introduced on https://github.com/cs3org/reva/commit/117adad while
 porting the configuration on .drone.yml to starlark.
 
+Force golang:alpine3.13 as base image to prevent errors from Make when
+running on Docker <20.10 as it happens on Drone
+ ref.https://gitlab.alpinelinux.org/alpine/aports/-/issues/12396
+
 https://github.com/cs3org/reva/pull/1843
+https://github.com/cs3org/reva/pull/1844