chore: add image publish and mirror sync scripts

scripts/docker-build-push-images.sh

@@ -0,0 +1,58 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+IMAGE_REGISTRIES="${IMAGE_REGISTRIES:-ghcr.io docker.io}"
+IMAGE_NAMESPACE="${IMAGE_NAMESPACE:-3252a8}"
+IMAGE_TAG="${IMAGE_TAG:?Set IMAGE_TAG to the release tag you want to build and push}"
+IMAGE_PREFIX="${IMAGE_PREFIX:-remnawave-minishop}"
+DOCKERFILE="${DOCKERFILE:-deploy/docker/Dockerfile}"
+TARGETS="${TARGETS:-backend worker frontend}"
+
+normalize_list() {
+  local value="$1"
+  value="${value//,/ }"
+  value="${value//;/ }"
+  echo "$value"
+}
+
+read -r -a registries <<< "$(normalize_list "$IMAGE_REGISTRIES")"
+read -r -a targets <<< "$(normalize_list "$TARGETS")"
+
+image_name() {
+  local registry="$1"
+  local target="$2"
+  echo "$registry/$IMAGE_NAMESPACE/$IMAGE_PREFIX-$target:$IMAGE_TAG"
+}
+
+build_image() {
+  local target="$1"
+  local tags=()
+  local registry
+
+  for registry in "${registries[@]}"; do
+    tags+=("-t" "$(image_name "$registry" "$target")")
+  done
+
+  echo "Building $target for: ${registries[*]}"
+  docker build -f "$DOCKERFILE" --target "$target" "${tags[@]}" .
+}
+
+push_image() {
+  local target="$1"
+  local registry
+  local image
+
+  for registry in "${registries[@]}"; do
+    image="$(image_name "$registry" "$target")"
+    echo "Pushing $image"
+    docker push "$image"
+  done
+}
+
+for target in "${targets[@]}"; do
+  build_image "$target"
+done
+
+for target in "${targets[@]}"; do
+  push_image "$target"
+done