Add release script

Author: meeDamian

scripts/new-release.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+set -e
+
+#
+## Given version, this script creates & pushes a relevant git-tag.
+#
+
+# required version
+VERSION=$1
+
+# Make sure ${VERSION} is provided before proceeding
+if [[ -z "${VERSION}" ]]; then
+  >&2 printf "\nERR: version missing:  version needs to be passed as the first argument.  Try:\n"
+  >&2 printf "\t./%s  %s\n\n"   "$(basename "$0")"  "v0.4.22"
+  exit 1
+fi
+
+# Verify there's no uncommitted changes
+if [[ -n "$(git status --untracked-files=no --porcelain)" ]]; then
+  >&2 printf "\nERR: working directory not clean.  Commit, or stash changes to continue.\n\n"
+  exit 1
+fi
+
+# Make sure specified ${VERSION} is present in Dockerfile
+if ! grep -q "${VERSION}" "./Dockerfile" ; then
+  >&2 printf "\nERR: Requested version not present in Dockerfile. Make sure that's what you want to do.\n\n"
+  exit 1
+fi
+
+# Update git-tags from the remote
+git fetch --tags
+
+# Get last build number
+LAST=$(git tag | grep '+build' | sed 's|^.*build||' | sort -h | tail -n 1)
+LAST=${LAST:-1}
+
+# Increment it
+((LAST++))
+
+# Construct the full ${TAG}, ex: `v0.7.7+build666`
+TAG="${VERSION}+build${LAST}"
+
+printf "Creating tag: %s…\t" "${TAG}"
+git tag -sa "${TAG}" -m "${TAG}"
+echo "done"
+
+printf "Pushing tag: %s…\t" "${TAG}"
+git push origin "${TAG}"
+echo "All done"