🔧 add Docker build scaffolding and rootfs 🔧

- add Dockerfile, .dockerignore, .env.scripts, .gitattributes
- add .gitignore and Gitea workflow directory
- add rootfs/ overlay files

Dockerfile
.dockerignore
.env.scripts
.gitattributes
.gitea/
.gitignore
rootfs/

rootfs/root/docker/setup/05-custom.sh

@@ -0,0 +1,75 @@
+#!/usr/bin/env bash
+# shellcheck shell=bash
+# - - - - - - - - - - - - - - - - - - - - - - - - -
+##@Version           :  202608141335-git
+# @@Author           :  CasjaysDev
+# @@Contact          :  CasjaysDev <docker-admin@casjaysdev.pro>
+# @@License          :  WTFPL
+# @@Copyright        :  Copyright 2026 CasjaysDev
+# @@Created          :  Fri Aug 14 01:35:28 PM EDT 2026
+# @@File             :  05-custom.sh
+# @@Description      :  script to run custom
+# @@Changelog        :  newScript
+# @@TODO             :  Refactor code
+# @@Other            :  N/A
+# @@Resource         :  N/A
+# @@Terminal App     :  yes
+# @@sudo/root        :  yes
+# @@Template         :  templates/dockerfiles/init_scripts/05-custom.sh
+# - - - - - - - - - - - - - - - - - - - - - - - - -
+# shellcheck disable=SC1001,SC1003,SC2001,SC2003,SC2016,SC2031,SC2090,SC2115,SC2120,SC2155,SC2199,SC2229,SC2317,SC2329
+# - - - - - - - - - - - - - - - - - - - - - - - - -
+# Set bash options
+set -eo pipefail
+if [ "$DEBUGGER" = "on" ]; then
+  echo "Enabling debugging"
+  set -x$DEBUGGER_OPTIONS
+fi
+# - - - - - - - - - - - - - - - - - - - - - - - - -
+# Set env variables
+exitCode=0
+
+# - - - - - - - - - - - - - - - - - - - - - - - - -
+# Predefined actions
+
+# - - - - - - - - - - - - - - - - - - - - - - - - -
+# Main script
+if [ -n "$ANDROID_SDK_ROOT" ]; then
+  echo "Installing the Android SDK cmdline-tools"
+  mkdir -p "$ANDROID_SDK_ROOT"
+  wget -q "https://dl.google.com/android/repository/commandlinetools-linux-${ANDROID_CMDLINE_TOOLS_VERSION}_latest.zip" -O "/tmp/cmdline-tools.zip"
+  unzip -q "/tmp/cmdline-tools.zip" -d "/tmp/cmdline-tools-raw"
+  mkdir -p "$ANDROID_SDK_ROOT/cmdline-tools"
+  mv "/tmp/cmdline-tools-raw/cmdline-tools" "$ANDROID_SDK_ROOT/cmdline-tools/latest"
+  rm -rf "/tmp/cmdline-tools.zip" "/tmp/cmdline-tools-raw"
+
+  echo "Accepting Android SDK licenses"
+  yes | sdkmanager --licenses >/dev/null 2>&1 || true
+
+  echo "Installing Android SDK platforms, build-tools, cmake and NDK"
+  sdk_packages="platform-tools build-tools;${ANDROID_BUILD_TOOLS_VERSION} cmake;${ANDROID_CMAKE_VERSION} ndk;${ANDROID_NDK_VERSION}"
+  IFS=','
+  for platform in $ANDROID_PLATFORM_VERSIONS; do
+    sdk_packages="$sdk_packages platforms;$platform"
+  done
+  unset IFS
+  # shellcheck disable=SC2086
+  sdkmanager $sdk_packages >/dev/null 2>&1
+
+  echo "Pre-warming the Gradle wrapper distribution"
+  dist_dir="${GRADLE_USER_HOME}/wrapper/dists/gradle-${GRADLE_VERSION}-bin"
+  mkdir -p "$dist_dir"
+  wget -q "https://services.gradle.org/distributions/gradle-${GRADLE_VERSION}-bin.zip" -O "$dist_dir/gradle-${GRADLE_VERSION}-bin.zip"
+  unzip -q "$dist_dir/gradle-${GRADLE_VERSION}-bin.zip" -d "$dist_dir"
+  touch "$dist_dir/gradle-${GRADLE_VERSION}-bin.zip.lck"
+fi
+
+# - - - - - - - - - - - - - - - - - - - - - - - - -
+# Set the exit code
+exitCode=$?
+# - - - - - - - - - - - - - - - - - - - - - - - - -
+exit $exitCode
+# - - - - - - - - - - - - - - - - - - - - - - - - -
+# ex: ts=2 sw=2 et filetype=sh
+# - - - - - - - - - - - - - - - - - - - - - - - - -
+