Migrate build steps to shell scripts

This should make it a bit easier to test in a development setup.  It
may also simplify the scripting a little.

.gitlab-ci.yml

@@ -22,38 +22,14 @@ before_script:
 migrate:
   stage: migrate
   script:
-  - docker pull "$CI_REGISTRY_IMAGE"/migrated:"$DEBIAN_VERSION" || true
-  - docker build --build-arg DEBIAN_VERSION="$DEBIAN_VERSION"
-           --tag "$CI_REGISTRY_IMAGE"/migrated:"$DEBIAN_VERSION"
-           --file migrate.df .
-  - docker push "$CI_REGISTRY_IMAGE"/migrated:"$DEBIAN_VERSION"
-  - docker tag  "$CI_REGISTRY_IMAGE"/migrated:"$DEBIAN_VERSION"
-                "$CI_REGISTRY_IMAGE"/migrated
-  - docker push "$CI_REGISTRY_IMAGE"/migrated
+    - ./migrate.sh
 
 build:
   stage: build
   script:
-  - docker pull "$CI_REGISTRY_IMAGE"/migrated
-  - rm -rf rootfs || true
-  - docker run --rm --cap-add SYS_ADMIN
-           --volume $PWD:/devuan --workdir /devuan
-           "$CI_REGISTRY_IMAGE"/migrated ./bootstrap.sh
-  - version="$DEVUAN_VERSION"-$(date +%F)
-    && (tar -cC rootfs . | docker import - "$CI_REGISTRY_IMAGE":"$version")
-    && docker push "$CI_REGISTRY_IMAGE":"$version"
-    && docker tag  "$CI_REGISTRY_IMAGE":"$version" "$CI_REGISTRY_IMAGE":"$DEVUAN_VERSION"
-    && docker push "$CI_REGISTRY_IMAGE":"$DEVUAN_VERSION"
-    && docker tag  "$CI_REGISTRY_IMAGE":"$DEVUAN_VERSION" "$CI_REGISTRY_IMAGE"
-    && docker push "$CI_REGISTRY_IMAGE"
+    - ./build.sh
 
 derive:
   stage: derive
   script:
-  - docker build --build-arg DEVUAN_IMAGE="$CI_REGISTRY_IMAGE":"$DEVUAN_VERSION"
-           --tag "$CI_REGISTRY_IMAGE"/buildd:"$DEVUAN_VERSION"
-           --file buildd.df .
-  - docker push "$CI_REGISTRY_IMAGE"/buildd:"$DEVUAN_VERSION"
-  - docker tag  "$CI_REGISTRY_IMAGE"/buildd:"$DEVUAN_VERSION"
-                "$CI_REGISTRY_IMAGE"/buildd
-  - docker push "$CI_REGISTRY_IMAGE"/buildd
+    - ./derive.sh

build.sh

@@ -0,0 +1,18 @@
+#!/bin/sh -Eeuo pipefail
+# build.sh -- a bootstrapped image in a migrated Devuan container
+# Copyright (C) 2017  Olaf Meeuwissen
+#
+# License: GPL-3.0+
+
+docker pull "$CI_REGISTRY_IMAGE"/migrated
+rm -rf rootfs || true
+docker run --rm --cap-add SYS_ADMIN \
+       --volume $PWD:/devuan --workdir /devuan \
+       "$CI_REGISTRY_IMAGE"/migrated ./bootstrap.sh
+version="$DEVUAN_VERSION"-$(date +%F)
+(tar -cC rootfs . | docker import - "$CI_REGISTRY_IMAGE":"$version")
+docker push "$CI_REGISTRY_IMAGE":"$version"
+docker tag  "$CI_REGISTRY_IMAGE":"$version" "$CI_REGISTRY_IMAGE":"$DEVUAN_VERSION"
+docker push "$CI_REGISTRY_IMAGE":"$DEVUAN_VERSION"
+docker tag  "$CI_REGISTRY_IMAGE":"$DEVUAN_VERSION" "$CI_REGISTRY_IMAGE"
+docker push "$CI_REGISTRY_IMAGE"

derive.sh

@@ -0,0 +1,13 @@
+#!/bin/sh -Eeuo pipefail
+# derive.sh -- handy Devuan images
+# Copyright (C) 2017  Olaf Meeuwissen
+#
+# License: GPL-3.0+
+
+docker build --build-arg DEVUAN_IMAGE="$CI_REGISTRY_IMAGE":"$DEVUAN_VERSION" \
+       --tag "$CI_REGISTRY_IMAGE"/buildd:"$DEVUAN_VERSION" \
+       --file buildd.df .
+docker push "$CI_REGISTRY_IMAGE"/buildd:"$DEVUAN_VERSION"
+docker tag  "$CI_REGISTRY_IMAGE"/buildd:"$DEVUAN_VERSION" \
+            "$CI_REGISTRY_IMAGE"/buildd
+docker push "$CI_REGISTRY_IMAGE"/buildd

migrate.sh

@@ -0,0 +1,14 @@
+#!/bin/sh -Eeuo pipefail
+# migrate.sh -- a Debian image to Devuan
+# Copyright (C) 2017  Olaf Meeuwissen
+#
+# License: GPL-3.0+
+
+docker pull "$CI_REGISTRY_IMAGE"/migrated:"$DEBIAN_VERSION" || true
+docker build --build-arg DEBIAN_VERSION="$DEBIAN_VERSION" \
+       --tag "$CI_REGISTRY_IMAGE"/migrated:"$DEBIAN_VERSION" \
+       --file migrate.df .
+docker push "$CI_REGISTRY_IMAGE"/migrated:"$DEBIAN_VERSION"
+docker tag  "$CI_REGISTRY_IMAGE"/migrated:"$DEBIAN_VERSION" \
+            "$CI_REGISTRY_IMAGE"/migrated
+docker push "$CI_REGISTRY_IMAGE"/migrated