gitlab-runnnerによって作成されるDocker内でapt-getがconnection timed outになる。

プロキシ環境内でDockerを使用してgitlab-ce,gitlab-runnerを起動し、AndroidソースのpushをキーにCIを動かそうとしているのですが、
$ apt-get --quiet update --yes
が、connection timed out になってしまいます。

Running with gitlab-runner 11.10.0 (3001a600)
  on Android Docker Runner FZ2oQXZW
Using Docker executor with image openjdk:8-jdk ...
Using locally found image version due to if-not-present pull policy
Using docker image sha256:b8d3f94869bbbcf89afa5f3d4cb18b9e53dff94fb7200729796abc026600087f for openjdk:8-jdk ...
Running on runner-FZ2oQXZW-project-3-concurrent-0 via a8b5fb814960...
Reinitialized existing Git repository in /builds/FZ2oQXZW/0/gitlab/example/apptest001/.git/
Fetching changes...
Checking out c95afeec as master...

Skipping Git submodules setup
$ apt-get --quiet update --yes
Err:1 http://security.debian.org/debian-security stretch/updates InRelease
  Could not connect to prod.debian.map.fastly.net:80 (151.101.228.204), connection timed out Could not connect to security.debian.org:80 (133.242.99.74), connection timed out
Err:2 http://deb.debian.org/debian stretch InRelease
  Could not connect to prod.debian.map.fastly.net:80 (151.101.228.204), connection timed out Could not connect to deb.debian.org:80 (5.153.231.4), connection timed out [IP: 5.153.231.4 80]
Err:3 http://deb.debian.org/debian stretch-updates InRelease
  Unable to connect to deb.debian.org:http: [IP: 5.153.231.4 80]
Reading package lists...
W: Failed to fetch http://deb.debian.org/debian/dists/stretch/InRelease  Could not connect to prod.debian.map.fastly.net:80 (151.101.228.204), connection timed out Could not connect to deb.debian.org:80 (5.153.231.4), connection timed out [IP: 5.153.231.4 80]
W: Failed to fetch http://security.debian.org/debian-security/dists/stretch/updates/InRelease  Could not connect to prod.debian.map.fastly.net:80 (151.101.228.204), connection timed out Could not connect to security.debian.org:80 (133.242.99.74), connection timed out
W: Failed to fetch http://deb.debian.org/debian/dists/stretch-updates/InRelease  Unable to connect to deb.debian.org:http: [IP: 5.153.231.4 80]
W: Some index files failed to download. They have been ignored, or old ones used instead.
$ apt-get --quiet install --yes wget tar unzip lib32stdc++6 lib32z1
Reading package lists...
Building dependency tree...
Reading state information...
E: Unable to locate package lib32stdc++6
E: Couldn't find any package by regex 'lib32stdc++6'
E: Unable to locate package lib32z1
ERROR: Job failed: exit code 1

.gitlab-ci.ymlはAndroid用のテンプレートのままです

# This file is a template, and might need editing before it works on your project.
# Read more about this script on this blog post https://about.gitlab.com/2018/10/24/setting-up-gitlab-ci-for-android-projects/, by Jason Lenny
# If you are interested in using Android with FastLane for publishing take a look at the Android-Fastlane template.

image: openjdk:8-jdk

variables:
  ANDROID_COMPILE_SDK: "28"
  ANDROID_BUILD_TOOLS: "28.0.2"
  ANDROID_SDK_TOOLS:   "4333796"

before_script:
  - apt-get --quiet update --yes
  - apt-get --quiet install --yes wget tar unzip lib32stdc++6 lib32z1
  - wget --quiet --output-document=android-sdk.zip https://dl.google.com/android/repository/sdk-tools-linux-${ANDROID_SDK_TOOLS}.zip
  - unzip -d android-sdk-linux android-sdk.zip
  - echo y | android-sdk-linux/tools/bin/sdkmanager "platforms;android-${ANDROID_COMPILE_SDK}" >/dev/null
  - echo y | android-sdk-linux/tools/bin/sdkmanager "platform-tools" >/dev/null
  - echo y | android-sdk-linux/tools/bin/sdkmanager "build-tools;${ANDROID_BUILD_TOOLS}" >/dev/null
  - export ANDROID_HOME=$PWD/android-sdk-linux
  - export PATH=$PATH:$PWD/android-sdk-linux/platform-tools/
  - chmod +x ./gradlew
  # temporarily disable checking for EPIPE error and use yes to accept all licenses
  - set +o pipefail
  - yes | android-sdk-linux/tools/bin/sdkmanager --licenses
  - set -o pipefail

stages:
  - build
  - test

lintDebug:
  stage: build
  script:
    - ./gradlew -Pci --console=plain :app:lintDebug -PbuildDir=lint

assembleDebug:
  stage: build
  script:
    - ./gradlew assembleDebug
  artifacts:
    paths:
    - app/build/outputs/

debugTests:
  stage: test
  script:
    - ./gradlew -Pci --console=plain :app:testDebug

プロキシを疑い

mkdir /etc/systemd/system/docker.service.d
vi /etc/systemd/system/docker.service.d/http-proxy.conf

[Service]
Environment="HTTP_PROXY=http://XXXXX/" "HTTPS_PROXY=http://XXXXX/" "NO_PROXY=docker:2375,docker:2376"

systemctl daemon-reload
systemctl restart docker

vi /etc/docker/daemon.json

{
"dns": ["nameserver-ip-address"],
"dns-search": ["search-url"]
}

vi /etc/resolve.conf

{
"dns": ["nameserver-ip-address"],
"dns-search": ["search-url"]
}

vi /etc/default/docker

export http_proxy=http://XXXXX/
export https_proxy=http://XXXXX/
export HTTP_PROXY=http://XXXXX/
export HTTPS_PROXY=http://XXXXX/

vi ~/.docker/config.json

{
        "proxies":
        {
                "default":
                {
                        "httpProxy": "http://XXXXX/",
                        "httpsProxy": "http://XXXXX/",
                        "noProxy": "docker:2375,docker:2376"
                }
        }
}

とホストマシン内で試行錯誤しましたが、効果ありませんでした。
動的に作成される、openjdk:8-jdk内のDocker内では特に何もしていません。

宜しくお願い致します。