fix build issue

scripts/preserve-env-values.sh

@@ -0,0 +1,117 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+usage() {
+  cat <<'EOF'
+Usage:
+  preserve-env-values.sh <source-env-file> <target-env-file> <KEY> [KEY...]
+
+For each KEY, copy the value from <source-env-file> into <target-env-file> only
+when the target value is missing or still looks like a placeholder.
+EOF
+}
+
+if [[ $# -lt 3 ]]; then
+  usage >&2
+  exit 1
+fi
+
+source_env_file="$1"
+target_env_file="$2"
+shift 2
+
+for env_file in "${source_env_file}" "${target_env_file}"; do
+  if [[ ! -f "${env_file}" ]]; then
+    echo "Missing env file: ${env_file}" >&2
+    exit 1
+  fi
+done
+
+read_env_value() {
+  local env_file="$1"
+  local key="$2"
+  local value
+
+  value="$(
+    awk -F= -v key="${key}" '
+      /^[[:space:]]*#/ || index($0, "=") == 0 {
+        next
+      }
+      {
+        name = $1
+        sub(/^[[:space:]]*export[[:space:]]+/, "", name)
+        gsub(/^[[:space:]]+|[[:space:]]+$/, "", name)
+        if (name == key) {
+          value = substr($0, index($0, "=") + 1)
+        }
+      }
+      END {
+        print value
+      }
+    ' "${env_file}"
+  )"
+
+  value="${value%$'\r'}"
+  value="${value#"${value%%[![:space:]]*}"}"
+  value="${value%"${value##*[![:space:]]}"}"
+  if [[ "${value}" == \"*\" && "${value}" == *\" ]]; then
+    value="${value#\"}"
+    value="${value%\"}"
+  elif [[ "${value}" == \'*\' && "${value}" == *\' ]]; then
+    value="${value#\'}"
+    value="${value%\'}"
+  fi
+  printf '%s' "${value}"
+}
+
+should_preserve_value() {
+  local value="$1"
+
+  [[ -z "${value}" || "${value}" == placeholder || "${value}" == replace-with-* || "${value}" == *changeme* || "${value}" == *change-me* ]]
+}
+
+upsert_env_value() {
+  local key="$1"
+  local value="$2"
+  local tmp_file
+
+  tmp_file="$(mktemp "${target_env_file}.tmp.XXXXXX")"
+  awk -v key="${key}" -v value="${value}" '
+    BEGIN {
+      updated = 0
+    }
+    /^[[:space:]]*#/ || index($0, "=") == 0 {
+      print
+      next
+    }
+    {
+      name = $1
+      sub(/=.*/, "", name)
+      sub(/^[[:space:]]*export[[:space:]]+/, "", name)
+      gsub(/^[[:space:]]+|[[:space:]]+$/, "", name)
+      if (name == key) {
+        print key "=" value
+        updated = 1
+        next
+      }
+      print
+    }
+    END {
+      if (!updated) {
+        print key "=" value
+      }
+    }
+  ' "${target_env_file}" > "${tmp_file}"
+
+  mv "${tmp_file}" "${target_env_file}"
+}
+
+for key in "$@"; do
+  source_value="$(read_env_value "${source_env_file}" "${key}")"
+  target_value="$(read_env_value "${target_env_file}" "${key}")"
+
+  if [[ -n "${source_value}" ]] && should_preserve_value "${target_value}"; then
+    upsert_env_value "${key}" "${source_value}"
+  fi
+done