dynamodb-emulator fails to init after failed bounding about aws-utils HOT 4 OPEN

service: tests
provider:
  name: aws
  stage: dev
  region: eu-central-1
  runtime: nodejs8.1
  profile: default
  deploymentBucket: serverless.deploys

plugins:
  - serverless-appsync-plugin
  - serverless-appsync-offline
  - serverless-offline-sns
  - serverless-offline

custom:
  serverless-offline:
    host: 0.0.0.0
  serverless-offline-sns:
    port: 4002
    debug: false
  appsync-offline:
    port: 62222
    dynamodb:
      server:
        port: 8000
        inMemory: false
        seed: true
        sharedDb: true
  region: eu-central-1
  clientId: <clientID>
  appSync:
    name: deploy_test
    authenticationType: AMAZON_COGNITO_USER_POOLS
    userPoolConfig:
      awsRegion: eu-central-1
      defaultAction: ALLOW
      userPoolId: <poolId>
    schema: schema.graphql
    mappingTemplatesLocation: ./
    mappingTemplates:
        - dataSource: get_user
          type: Invite
          field: inviter
          request: resolver/request-mapping-template.json
          response: resolver/response-mapping-template.json
    dataSources:
          - type: AWS_LAMBDA
        name: get_user
        description: 'Get User'
        config:
            lambdaFunctionArn: arn:aws:lambda:${self:custom.region}:${self:custom.clientId}:function:fn-py-getuser
            functionName: getuser
functions:
  getuser:
    handler: getuser/handler.getuser
    timeout: 10
    runtime: python3.6
resources:
   Resources:
   (...)

FROM ubuntu:18.04

ARG aws_access_key_id
ARG aws_secret_access_key

ENV GOPATH=/py-useraccount-tests
ENV GOBIN=$GOPATH/bin
ENV PATH=/root/.npm_packages/bin:$PATH
ENV NODE_PATH=/root/.npm_packages/lib/node_modules:$NODE_PATH

RUN \
    apt-get update && \
    apt-get install -y make git curl && \
    apt-get install -y python3 python3-pip && \
    apt-get install -y golang && \
    apt-get install -y npm && \
    apt-get install -y openssh-server zip && \
    apt-get install -y default-jre
RUN \
    pip3 install boto3

RUN \
    curl -sL https://deb.nodesource.com/setup_11.x | bash - && \
    apt-get install -y nodejs

RUN apt -y autoremove

RUN \
    go get -u github.com/aws/aws-lambda-go/lambda && \
    go get -u github.com/golang/dep/cmd/dep

COPY package.json /py-tests

RUN pip3 install aws-sam-cli jwt

RUN npm config set prefix /root/.npm_packages

RUN npm install -g try-thread-sleep@latest
RUN npm install -g serverless@latest --ignore-script spawn-sync
RUN npm install -g serverless-appsync-offline@latest --ignore-script spawn-sync
RUN npm install -g serverless-appsync-plugin@latest
RUN npm install -g serverless-offline@latest
RUN npm install -g serverless-offline-sns@latest
RUN npm install -g just-api --unsafe-perm=true --allow-root
RUN npm install -g aws-appsync
RUN npm install -g aws-sdk

RUN cd /root/.npm_packages/lib/node_modules/serverless-appsync-offline/node_modules/graphql-phone-type/ && npm install && npm run prepare
RUN mkdir /root/.npm_packages/lib/node_modules/serverless-appsync-offline/node_modules/\@conduitvc/dynamodb-emulator/emulator && cd /root/.npm_packages/lib/node_modules/serverless-appsync-offline/node_modules/\@conduitvc/dynamodb-emulator/ && npm run install 

WORKDIR "/py-tests"

COPY . /py-tests

RUN sls config credentials --provider aws --key "$aws_access_key_id" --secret "$aws_secret_access_key"

EXPOSE 62222 8000
CMD ["sls", "offline", "start"]