Revert "removed ECR image links (#348)"

This reverts commit 6446b45.

.github/docker-images/README.md

@@ -5,10 +5,19 @@ The AWS IoT Device Client provides several Docker images to simplify testing and
 ## Base Images
 
 The base images are built from the Docker files located in the [base-images](./base-images) directory. These images contain
-the dependencies of the Device Client only and are intended to be used to build & run the Device Client.
+the dependencies of the Device Client only and are intended to be used to build & run the Device Client. Pre-built base
+images are publicly available through AWS ECR in the [aws-iot-device-client-base-images repository](https://gallery.ecr.aws/aws-iot-device-client/aws-iot-device-client-base-images).
+
+## AWS IoT Device Client Images
+
+Docker images containing Device Client binaries are also available through ECR. These images are built using this [Dockerfile](./Dockerfile)
+and are multi-stage builds that are minimum sized. Images are built from both the pre-release and main branches. The pre-release
+images are available for testing and experimenting with features which are still in development from the [pre-release repository](https://gallery.ecr.aws/aws-iot-device-client/pre-release).
+Images built from the main branch are available from the [aws-iot-device-client repository](https://gallery.ecr.aws/aws-iot-device-client/aws-iot-device-client).
 
 ## Integration Test Images
 
 Before releasing new features on the main branch end-to-end tests are performed in the pre-release branch. As part of this
 process the Docker files located in the [integration-tests](./integration-tests) directory are used to build and run the
-end-to-end tests.
+end-to-end tests. In order to make it easy to recreate any test failures locally, these images are pushed to the [integration-tests repository](https://gallery.ecr.aws/aws-iot-device-client/integration-tests).
+These images contain both the pre-release version of the Device Client and the integration test binary.

README.md

@@ -75,11 +75,14 @@ The AWS IoT Device Client is currently compatible with x86_64, aarch64, armv7l,
 
 ### Docker
 
-The AWS IoT Device Client currently provides several dockerfiles for various platforms and Linux distributions.
+The AWS IoT Device Client currently provides several docker images on various platforms and Linux distributions.
 
 To build a Docker image from the repository locally simply run the [docker-build.sh](docker-build.sh) script with your
 preferred OS (ubuntu/amazonlinux/ubi8) (e.g. docker-build.sh ubuntu) if no OS is passed the build will default to ubuntu (18.04).
 
+For a minimum sized fully built AWS IoT Device Client Docker image simply pull your preferred architecture/OS combination
+from our repository [here](https://gallery.ecr.aws/aws-iot-device-client/aws-iot-device-client)
+
 #### Docker Files
 
 - [Base Images:](.github/docker-images/base-images) Multi-stage Dockerfiles which will build dependencies only (target=**base**) or build the Device Client from your current directory(target=**deploy**).