Permissions to deploy to S3 from a CI provider

.travis.yml

language: node_js
node_js:
  - node
cache:
  yarn: true
  directories:
    - node_modules
script:
  - mkdir -p build/css
  - cp index.html build/
  - ls build
  - yarn run sass
  - yarn run css-preprocess
  - ls build
deploy:
  provider: s3
  access_key_id: "ACCESS_KEY"
  secret_access_key:
    secure: "w/EXAMPLE="
  bucket: "YOUR BUCKET"
  acl: public_read
  skip_cleanup: true
  local_dir: build
branches:
  only:
    - master

DeployToS3.json

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": "s3:ListAllMyBuckets",
            "Resource": "arn:aws:s3:::*"
        },
        {
            "Effect": "Allow",
            "Action": [
                "s3:ListBucket",
                "s3:GetBucketLocation"
            ],
            "Resource": [
                "arn:aws:s3:::your_bucket_name"
            ]
        },
        {
            "Effect": "Allow",
            "Action": [
                "s3:PutObject",
                "s3:GetObject",
                "s3:GetObjectAcl",
                "s3:DeleteObject",
                "s3:PutObjectAcl"
            ],
            "Resource": [
                "arn:aws:s3:::your_bucket_name/*"
            ]
        }
    ]
}