Merge branch 'fix/dockerHubLibraryBuilds' into 'master'

Switch to alpine in verify stage

See merge request archlinux/archlinux-docker!47

.gitlab-ci.yml

@@ -12,8 +12,8 @@ stages:
 lint:
   stage: lint
   image: hadolint/hadolint:latest
-  # DL3007: We use the latest tag for multistage build
-  script: hadolint --ignore DL3007 --ignore DL3020 Dockerfile.template
+  # DL3018: We don't need alpine version pins
+  script: hadolint --ignore DL3018 Dockerfile.template
   except:
     - releases
     - tags

Dockerfile.template

@@ -8,13 +8,14 @@
 # The second stage is for actually configuring the system a little bit.
 # Some templating is done in order to allow us to easily build different configurations and to
 # allow us to automate the releaes process.
-FROM archlinux:latest AS verify
+FROM alpine:3.12 AS verify
 COPY TEMPLATE_ROOTFS_FILE /
+RUN apk add --no-cache curl bash
 SHELL ["/bin/bash", "-c"]
-RUN ROOTFS="$(curl -OJL --continue-at - -w "%{filename_effective}" TEMPLATE_ROOTFS_URL)" && \
+RUN ROOTFS="$(curl -sOJL --continue-at - -w "%{filename_effective}" TEMPLATE_ROOTFS_URL)" && \
     sha256sum -c <<< "TEMPLATE_ROOTFS_HASH" && \
     mkdir /rootfs && \
-    tar -C /rootfs --extract --auto-compress --file "${ROOTFS}"
+    tar -C /rootfs --extract --file "${ROOTFS}"
 
 FROM scratch AS root
 COPY --from=verify /rootfs/ /