update build system to be a little more flexible

ch32v-insert-coin/build-run.sh

@@ -1,2 +1,2 @@
 #!/bin/bash
-docker run --privileged -it --rm -v "$PWD":/usr/src/app -w /usr/src/app ch32-env:latest cargo +nightly run --release 
+cargo +nightly run --release

ch32v-insert-coin/init.sh

@@ -4,6 +4,7 @@ mkdir ${PWD}/tmp
 cd tmp
 git clone ssh://git@git.glyphs.tech:222/sigil-03/docker-devtools.git
 cd docker-devtools/ch32
-docker build --tag ch32-env .
+ls
+./build.sh
 cd $DIR
 rm -rf tmp

ch32v-insert-coin/launch.sh

@@ -0,0 +1,2 @@
+#!/bin/bash
+docker run --privileged -it --rm -v "$PWD":/usr/src/app -w /usr/src/app ch32-rust:latest /bin/bash 

notes.md

@@ -3,12 +3,24 @@ there is a docker image that contains the entire toolchain + flashing utility. f
 ```shell
 $ ./init.sh
 ```
-once built, you won't need to build this again. for the remainder of your development, you can use the following script:
+once built, you won't need to build this again. for the remainder of your development, you can use the following script to launch the environment shell:
+```shell
+$ ./launch.sh
+```
+
+this will launch the docker image and give you a shell which has all of the toolchains and flashing utilities installed. to build the firmware image and flash it to the ch32 (assuming you have a wch-linke attached) run the following from inside the env shell: 
+
 ```shell
 $ ./build-run.sh
 ```
 this will build the firmware image, and attempt to upload it to the board using `wlink`. once uploaded, it will attach a serial debugger. 
 
+to exit the serial debugger simply use `ctrl-c`. to exit the environment shell use:
+
+```shell
+$ exit
+```
+
 # FLASHING
 flashing is done using the [`wlink`](https://github.com/ch32-rs/wlink?tab=readme-ov-file#install) utility. `probe-rs` also works, but can be flaky, and does not support SDI prints very well.