How to Fix Timezone in Container Generated by Docker Build

Sorry I am a newbie to docker and docker-compose.

The "saved" container does not show correct timezone.

Background:

1. because of company constraint, I cannot put the Dockerized SpringBoot Application to a Host B.
2. My Boss tells me to Dockerized SpringBoot Application in Host A.
3. Save the docker save $imageName > application.tar in Host A
4. Load the Saved Image docker load < application.tar in Host B
5. Run the Docker image in Host B...
6. Host A and Host B are in same timezone (Hong Kong Time)

Result:

1. The timezone inside container (check log result) find the log time is correct (Hong Kong timezone, UTC+8) in Host A (no matter it is triggered by docker run or docker compose)

2. The timezone inside the container (check log result) find the log time is WRONG (UTC+0) in Host B (no matter it is triggered by docker run or docker compose)

docker version Client: Version: 1.13.1 API version: 1.26 Package version: docker-1.13.1-88.git07f3374.el7.x86_64 Go version: go1.10.2 Git commit: 07f3374/1.13.1 Built: Thu Dec 6 07:01:49 2018 OS/Arch: linux/amd64

docker-compose version docker-compose version 1.23.2, build 1110ad01 docker-py version: 3.6.0 CPython version: 3.6.7 OpenSSL version: OpenSSL 1.1.0f 25 May 2017

Host A Ubuntu Version 18.04.3

FROM java:8-jdk-alpine
WORKDIR /root/flexi/
COPY ./target/foo.jar /root/flexi/

### an alpine based image you have to install the tzdata first #### 
RUN apk add --no-cache tzdata


### ENV TZ=Asia/Hong_Kong
### RUN echo "Europe/Stockholm" > /etc/timezone
### RUN dpkg-reconfigure -f noninteractive tzdata
### Not work for ubuntu to dpkg-reconfigure


VOLUME /log

ADD db.properties /root/flexi
EXPOSE 9988
RUN sh -c 'touch foo.jar'
ENTRYPOINT ["java", "-jar", "foo.jar"]

version: '2.2'
services:
  foos:
    build:
      context: ./
      dockerfile: Dockerfile
    image: foos
    ports:
      - "9555:9988"
    environment:
      - TZ=Asia/Hong_Kong
    networks:
      - network1
    volumes:
      - /log:/log
networks:
  network1:

docker build -t foos .

docker inspect -f '{{ .Created }}'  foos
--> Shows UTC time (in both Host A and Host B)