update readme

readme.md

@@ -25,9 +25,9 @@ The master branch is configured to build base images from the docker hub distro
 
 The main script is "build" At the very minimum run as just `./build` it will build an alpine image from the docker hub official alpine latest image with a minimal set of packages installed (e.g. git) and a custom uci shell environment.
 
-To run the ./build script from other repos install it using the ./install install which just creates a link in /opt/bin
+To run the ./build script from other repos install it using the install script
 
-`ln -nsf $(dirname "$(realpath "$BASH_SOURCE")")/build /opt/bin/dbuild`
+'./install
 
 The repo also supports (with scripts) pushing to alternate private repositories packages (like a self hosted gitea or github)
 
@@ -42,37 +42,11 @@ the build script requires an init.sh file in a source directory for the scripts
 by default that is `<source directory>/init.sh`.  by default that source directory is `src/` relative to the current directory
 
 
-```
+run 
-Image Build Script: Creates one or more images using a target in the docker-bake.hcl file
+
-USAGE: /opt/bin/dbuild <subcommand> <options> <build_target> <imagename, imageuser>
+`./build -h`
-valid build_target: dev arm amd deploy private multi;  default: dev
+
-### subcommands:
+for help
-try (runs try a container script, see try usage)  /opt/bin/dbuild try -i
+
-tag  (runs image_tag script)
+also see examples folder for example build environment file (more help details)
-info get image info,  info <arch, exists, id>  nothing is all info in json
---- option switches (no argument):
--o do not overwrite an existing image (default), instead move it to a temporary timestamp tag
--i rebuild only the initialization RUN by busting the cache at that point
--v show verbose information about the build
--a (auto) do not prompt to continue build,  by default will not prompt if non-interactive shell
--c after build try out the image by starting a container terminal therein, for dev target this is the default;
--x exclude distro from image name;
--n for --no_cache
--k keep the build scripts (see -w) after the build so they are incorporated into the image
--p push to repository; after build push to repository default is hub.docker.com (not need for deploy target)
---- options with argument <ARGUMENT>:
--e <path to environment file> load any or all of options below via a file
--d <LINUX_DISTRO> supported: alpine, debian, ubuntu, default: alpine; if base image set distro will be determined
--t <TAG> tag following : in output image name (i.e.  REPO/USER/NAME:TAG), default: latest
--u <USER>;  repository user prefix in output image name (i.e.  REPO/USER/NAME:TAG)
--r <REPO>;  private repo name, do not use for hub.docker.com (docker.io)
--b <BASE_IMAGE>;  used in FROM in Dockerfile, default is official distro image (e.g. alpine:latest)
--w <BUILD_DIR>;  set a custom WORKDIR in Dockerfile (in image), default is /build, see -k
---- options set ONLY by environment variable (see -e as well)
-<SYSADMIN_PW> set alternate password for container sysadmin account, default is 'sysadmin'
-NOTE any option with <CAPTIALIZED> above can be set in environment instead
-#### examples:
-/opt/bin/dbuild -a -d ubuntu -u ucommandit
-build (without prompt) a local ubuntu image from scratch and label it ucommandit/ubuntu:latest
-```