Upgrade alpine/shfmt/gh versions

Dockerfile

@@ -1,10 +1,10 @@
-FROM alpine:3.16.0
+FROM alpine:3.18.4
 LABEL "name"="sh-checker"
 LABEL "maintainer"="Luiz Muller <contact@luizm.dev>"
 
-ARG shfmt_version=3.6.0
+ARG shfmt_version=3.7.0
 ARG shellcheck_version=0.9.0
-ARG gh_version=2.23.0
+ARG gh_version=2.37.0
 
 RUN apk add --no-cache bash git jq curl checkbashisms xz \
     && apk add --no-cache --virtual .build-deps tar \

upgrade.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+# shellcheck disable=SC2312 # (info): Consider invoking this command separately to avoid masking its return value (or use '|| true' to ignore).
+
+set -e
+
+if command -v curl >/dev/null; then
+  # -sq == --silent --disable
+  dl="curl -sq"
+else
+  # -q0 == --quiet --output-document
+  dl='wget --no-config -qO -'
+fi
+
+ALPINE_VER=$(${dl} 'https://registry.hub.docker.com/v2/repositories/library/alpine/tags/' | jq -r '.results[1].name')
+GH_VER=$(${dl} https://api.github.com/repos/cli/cli/tags | jq -r '.[0].name')
+SHELLCHECK_VER=$(${dl} https://api.github.com/repos/koalaman/shellcheck/tags | jq -r '.[0].name')
+SHFMT_VER=$(${dl} https://api.github.com/repos/mvdan/sh/tags | jq -r '.[0].name')
+
+GH_VER="${GH_VER/v/}"
+SHELLCHECK_VER="${SHELLCHECK_VER/v/}"
+SHFMT_VER="${SHFMT_VER/v/}"
+
+sed -Ei "
+s/^(FROM\s+alpine:).*/\1${ALPINE_VER}/;
+s/^(ARG\s+gh_version=).*/\1${GH_VER}/;
+s/^(ARG\s+shellcheck_version=).*/\1${SHELLCHECK_VER}/;
+s/^(ARG\s+shfmt_version=).*/\1${SHFMT_VER}/;
+" Dockerfile
+
+git diff