Adds some automation

generate-stackbrew-library.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+set -e
+
+cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
+
+url='git://github.com/nextcloud/docker'
+
+commit="$(git log -1 --format='format:%H' -- Dockerfile $(awk 'toupper($1) == "COPY" { for (i = 2; i < NF; i++) { print $i } }' Dockerfile))"
+fullVersion="$(grep -m1 'ENV NEXTCLOUD_VERSION ' ./Dockerfile | cut -d' ' -f3)"
+
+echo '# maintainer: docker@nextcloud.com'
+echo
+echo "$fullVersion: ${url}@${commit}"
+echo "${fullVersion%.*}: ${url}@${commit}"
+echo "${fullVersion%.*.*}: ${url}@${commit}"
+echo "latest: ${url}@${commit}"

update.sh

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+#!/bin/bash
+set -eo pipefail
+
+current="$(
+	git ls-remote --tags https://github.com/nextcloud/server.git \
+		| awk -F 'refs/tags/' '
+			$2 ~ /^v?[0-9]/ {
+				gsub(/^v|\^.*/, "", $2);
+				print $2;
+			}
+		' \
+		| sort -uV \
+		| tail -1
+)"
+
+set -x
+sed -ri 's/^(ENV NEXTCLOUD_VERSION) .*/\1 '"$current"'/;' ./Dockerfile