meta: add noisy messages to build script

build-all

@@ -1,10 +1,17 @@
 #!/usr/bin/env sh
 
+announce() { : \
+ && printf >&2 '  \033[1m\033[7m <-- \033[0m\033[1m ' \
+ && printf >&2 ' %30s %-30s ' "$1" "$2" \
+ && printf >&2 '  \033[1m\033[7m --> \033[0m\n' \
+ ;}
+
 yes_retrieve() { : \
  && local ok=1 out= g= image="${1?missing argument}" && shift \
  && [ -d out ] && out="$(realpath out)" \
  && for f in "$@" \
-    ;do g="out/${f##*/}" && { ! [ -e "$g" ] || mv "$g" "$g~" ;} || return \
+    ;do announce retrieving "$f" \
+     && g="out/${f##*/}" && { ! [ -e "$g" ] || mv "$g" "$g~" ;} || return \
     ;done \
  && podman run -v="$out":/out --rm --entrypoint /bin/busybox "$image" \
     cp -- "$@" "/out/" \
@@ -26,6 +33,7 @@ dbg_retrieve() { : \
 
 build() { : \
  && local t="${1?missing argument}" && shift \
+ && announce building "$t" \
  && podman build -t "$t" "$t" "$@" \
  ;}