ops: remove hardcoded registry and owner from scripts

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ops/build-image.sh

@@ -1,20 +1,47 @@
 #!/bin/sh
+# Build a Docker image locally.
+#
+# Usage (interactive — prompts for missing values):
+#   ./ops/build-image.sh
+#
+# Usage (non-interactive — all values as positional args):
+#   ./ops/build-image.sh <tag> <registry> <owner>
+
 set -eu
 
 ROOT_DIR=$(CDPATH= cd -- "$(dirname "$0")/.." && pwd)
 
-if ! command -v docker >/dev/null 2>&1; then
-    echo "docker not found in PATH" >&2
-    exit 1
+command -v docker >/dev/null 2>&1 || { echo "error: docker not found in PATH" >&2; exit 1; }
+
+DEFAULT_TAG=$(git -C "${ROOT_DIR}" rev-parse --short HEAD 2>/dev/null || echo dev)
+
+ask() {
+    prompt="$1"; default="$2"
+    if [ -n "$default" ]; then
+        printf "%s [%s]: " "$prompt" "$default"
+    else
+        printf "%s: " "$prompt"
+    fi
+    read -r value
+    echo "${value:-$default}"
+}
+
+if [ $# -ge 3 ]; then
+    IMAGE_TAG="$1"
+    REGISTRY="$2"
+    OWNER="$3"
+elif [ $# -ge 1 ]; then
+    IMAGE_TAG="$1"
+    REGISTRY=$(ask "Registry" "")
+    OWNER=$(ask "Owner" "")
+else
+    IMAGE_TAG=$(ask "Tag" "${DEFAULT_TAG}")
+    REGISTRY=$(ask "Registry" "")
+    OWNER=$(ask "Owner" "")
 fi
 
-GITEA_REGISTRY="${GITEA_REGISTRY:-git.mchus.pro}"
-GITEA_OWNER="${GITEA_OWNER:-reanimator}"
 IMAGE_NAME="${IMAGE_NAME:-jukebox-maker}"
-DEFAULT_TAG=$(git -C "${ROOT_DIR}" rev-parse --short HEAD 2>/dev/null || echo dev)
-IMAGE_TAG="${1:-${IMAGE_TAG:-${DEFAULT_TAG}}}"
-
-FULL_IMAGE="${GITEA_REGISTRY}/${GITEA_OWNER}/${IMAGE_NAME}"
+FULL_IMAGE="${REGISTRY}/${OWNER}/${IMAGE_NAME}"
 
 echo "building ${FULL_IMAGE}:${IMAGE_TAG}"
 docker build \