Makefile: fix lint rules

Makefile

@@ -1,4 +1,4 @@
-SCRIPTS = $(shell awk '/#!\/bin\/(ba)?sh/&&FNR==1{print FILENAME}' $(shell git ls-files))
+SCRIPTS = $(shell awk '/#!\/usr\/bin\/env (ba)?sh/&&FNR==1{print FILENAME}' $(shell git ls-files))
 GODEPS = $(shell git ls-files '*.go' go.mod go.sum)
 
 VSN ?= $(shell git describe --dirty)
@@ -14,7 +14,7 @@ test: coverage.out
 .PHONY: lint
 lint:
 	go vet ./...
-	$(shell go env GOPATH)/bin/staticcheck -f stylish ./...
+	staticcheck -f stylish ./...
 	shellcheck $(SCRIPTS)
 
 .INTERMEDIATE: coverage.out

README.md

@@ -5,6 +5,15 @@ Undocker
 
 Converts a Docker image (a bunch of layers) to a flattened "rootfs" tarball.
 
+Project Status
+--------------
+
+The project was announced to be deprecated in the beginning of 2024, but the
+maintainer has an interest in Docker ecosystem again, thus will maintain it
+somewhat starting at mid-2024.
+
+The author has some significant changes in mind, but the timeline is unknown.
+
 Why?
 ----
 
@@ -79,13 +88,6 @@ Similar Projects
 
 * [rootfs_builder](https://github.com/ForAllSecure/rootfs_builder)
 
-Changelog
----------
-
-**v1.0**
-
-* initial release: `rootfs.Flatten` and a simple command-line application.
-
 Contributions
 -------------
 

main.go

@@ -43,7 +43,7 @@ func main() {
 
 	c := &command{flattener: rootfs.Flatten, Stdout: os.Stdout}
 	if err := c.execute(os.Args[1], os.Args[2]); err != nil {
-		fmt.Printf("Error: %v\n", err)
+		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
 		os.Exit(1)
 	}
 	os.Exit(0)

release

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -euo pipefail
 
 _err(){ >&2 echo "ERROR: $*"; exit 1; }
@@ -22,4 +22,4 @@ last_tag=$(git tag | tail -1)
     echo
     echo Changelog since "$last_tag":
     git log --pretty=format:"- [%an] %s" "$last_tag"..HEAD
-} | git tag -u motiejus@jakstys.lt -F - "$1"
+} | git tag -F - "$1"