Reverted 'docker login' command

Author: Kourchenko

buildspec.yml

@@ -1,15 +1,12 @@
 version: 0.2
-env:
-  parameter-store:
-      DOCKER_USERNAME: DOCKER_USERNAME
-      DOCKER_PASS: DOCKER_PASS
+
 phases:
   pre_build:
     commands:
       - echo Logging in to Amazon ECR...
       - aws --version
       - REPOSITORY_URI=238241637211.dkr.ecr.us-west-2.amazonaws.com/speedupamerica-migrator
-      - docker login --username $DOCKER_USERNAME -p $DOCKER_PASS $REPOSITORY_URI
+      - aws ecr get-login-password --region us-west-2 | docker login --username AWS --password-stdin $REPOSITORY_URI
       - COMMIT_HASH=$(echo $CODEBUILD_RESOLVED_SOURCE_VERSION | cut -c 1-7)
       - IMAGE_TAG=${COMMIT_HASH:=latest}
   build: