Add release automation script

run.sh

@@ -0,0 +1,51 @@
+#!/bin/sh
+
+set -eu
+
+_user() {
+  printf "\033[0;33m%s\033[0m" "$1"
+}
+
+_success() {
+  printf "\033[0;32m==> %s\033[0m\n\n" "$1"
+}
+
+_fail() {
+  printf "\033[0;31m==> %s\033[0m\n\n" "$1"
+}
+
+prep_release() {
+  if ! git diff-index --quiet HEAD --; then
+    _fail "Repo must not be dirty"
+    exit 1
+  fi
+
+  grep -rlZE 'v\d+\.\d+\.\d+' --exclude=Dockerfile --exclude-dir=.git . | xargs sed -i '' 's/v[0-9]\{1,\}\.[0-9]\{1,\}\.[0-9]\{1,\}/'"$1"'/g'
+
+  _user "Push? "
+  read -r answer
+  if [ "$answer" = "y" ]; then
+    git add --update
+    git commit -m "Prepare for $1 release"
+    git push origin main
+    git tag -a "$1" -m "Release $1"
+    git push --tags
+    _success "Released $1!"
+  fi
+}
+
+_help() {
+  echo "Usage: ./run.sh [command]"
+  echo ""
+  echo "Available commands:"
+  echo "prep-release <version>                Prepare new release"
+}
+
+cmd="${1:-}"
+case "$cmd" in
+  "prep-release")
+    shift
+    prep_release "$@"
+    ;;
+  *) _help ;;
+esac