docs: update docs to clarify path to documentation for previous versions of the validator

README.md

@@ -2,6 +2,10 @@
 
 A GTFS Schedule (static) [General Transit Feed Specification (GTFS)](https://gtfs.mobilitydata.org/spec/gtfs-schedule) feed validator
 
+This README contains information for master branch of this project, which is under active development. If you'd like to view documentation for past releases of the project, see:
+* [v1.4.0](https://github.com/MobilityData/gtfs-validator/blob/v1.4.0/README.md)
+* [v2.0.0](https://github.com/MobilityData/gtfs-validator/blob/v2.0.0/README.md)
+
 # Introduction
 This is a command-line tool written in Java that performs the following steps:
 1. Loads input GTFS zip file from a URL or disk
@@ -11,16 +15,16 @@ This is a command-line tool written in Java that performs the following steps:
 # Run the app via command line
 ### Setup
 1. Install [Java 8 or higher](https://www.oracle.com/java/technologies/javase-downloads.html)
-1. Download [gtfs-validator-v2.0.0_cli.jar](https://github.com/MobilityData/gtfs-validator/releases/download/v2.0.0/gtfs-validator-v2.0.0_cli.jar)
+1. Download the latest snapshot jar of the validator from the artifacts generated by the [`Test Package Document`](https://github.com/MobilityData/gtfs-validator/actions/workflows/test_pack_doc.yml) workflow.
 
 ### Run it
 To validate a GTFS dataset on your computer:
 
-`java -jar gtfs-validator-v2.0.0_cli.jar -i /myDirectory/gtfs.zip -o output -c ca` 
+`java -jar gtfs-validator-v-snapshot_cli.jar -i /myDirectory/gtfs.zip -o output -c ca` 
 
 To download and validate a GTFS dataset from a URL:
 
-`java -jar gtfs-validator-v2.0.0_cli.jar -u https://www.abc.com/gtfs.zip -o output -c ca`
+`java -jar gtfs-validator-v-snapshot_cli.jar -u https://www.abc.com/gtfs.zip -o output -c ca`
 
 where:
 * `--input` or `-i`: the path to the GTFS file (e.g., `/myDirectory/gtfs.zip`)
@@ -34,15 +38,15 @@ More detailed instructions are on our ["Usage"](/docs/USAGE.md) page.
 # Run the app using Docker
 ### Setup
 1. Download and install [Docker](https://docs.docker.com/get-started/)
-1. Pull the [latest Docker image for this project](https://github.com/orgs/MobilityData/packages/container/package/gtfs-validator). For example, `docker pull ghcr.io/mobilitydata/gtfs-validator:v2.0.0`.
+1. Pull the [latest Docker image for this project](https://github.com/orgs/MobilityData/packages/container/package/gtfs-validator). For example, `docker pull ghcr.io/mobilitydata/gtfs-validator` for the latest snapshot version of the validator.
 
 ### Run it
 
 #### For Mac and Linux
 
 To run the Docker image in a new container:
 
-`docker run -v /myDirectory:/theContainerDirectory -it ghcr.io/mobilitydata/gtfs-validator:v2.0.0`
+`docker run -v /myDirectory:/theContainerDirectory -it ghcr.io/mobilitydata/gtfs-validator:latest`
 
 where:
 * `-v /myDirectory:/theContainerDirectory`: syntax to share directories and data between the container and the host (your computer). With the above command, any files that you place in `/myDirectory` on the host will show up in `/theContainerDirectory` inside the container and vice versa.
@@ -55,7 +59,9 @@ The validator can then be executed via bash commands. See the [preceeding instru
 
 # Validation rules
 * [Implemented rules](/RULES.md)
-* [Possible future rules](https://github.com/MobilityData/gtfs-validator/issues?q=is%3Aopen+is%3Aissue+label%3A%22new+rule%22)
+* [GTFS Reference related rules](https://github.com/MobilityData/gtfs-validator/labels/Rules%20-%20GTFS%20Reference)
+* [GTFS Best Practices related rules](https://github.com/MobilityData/gtfs-validator/labels/Rules%20-%20GTFS%20Best%20Practices)
+* [Common cases of bad data related rules](https://github.com/MobilityData/gtfs-validator/labels/Rules%20-%20Common%20cases%20of%20bad%20data)
 
 Have a suggestion for a new rule? Open [an issue](https://github.com/MobilityData/gtfs-validator/issues/new/choose). You can see the complete process for adding new rules on the ["Adding new rules"](/docs/NEW_RULES.md) page.