problem with robot framework test in docker runner - docker

Question

I want to run my android tests with robot framework and appium on an android emulator with docker on a gitlab runner. after execution, i received these errors and job failed:
$ docker run --network mobile_driver_test_automation_default --rm --mount "type=bind,src=${CI_PROJECT_DIR}/robot/Reports,dst=/app/reports" qa/robot:latest python3 -m robot -d /app/reports /app/Tests/Login.robot
Init Page Assertion Design Chaneg Path [ WARN ] Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7fdd8c04ea00>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /wd/hub/session
[ WARN ] Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7fdd8c04ed60>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /wd/hub/session
[ WARN ] Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7fdd8c04eee0>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /wd/hub/session
[ WARN ] Keyword 'Capture Page Screenshot' could not be run on failure: No application is open
| FAIL |
MaxRetryError: HTTPConnectionPool(host='appium_server', port=4723): Max retries exceeded with url: /wd/hub/session (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7fdd8bff1880>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution'))
My docker-compose and gitlab.ci files are shown below:
docker-compose:
version: "2.2"
services:
selenium_hub:
image: selenium/hub:3.14.0-curium
ports:
- 4444:4444
appium_server:
image: appium/appium:v1.22.3-p1
depends_on:
- selenium_hub
network_mode: "service:selenium_hub"
volumes:
- ./robot/apk:/root/tmp/apk/
environment:
- CONNECT_TO_GRID=true
- SELENIUM_HOST=selenium_hub
- RELAXED_SECURITY=true
nexus_emulator:
image: budtmo/docker-android-x86-10.0:v1.10-p7
depends_on:
- selenium_hub
- appium_server
volumes:
- ./robot/apk:/root/tmp/apk/
ports:
- 6080:6080
- 4723:4723
- 5554:5554
- 5555:5555
environment:
- DEVICE=Nexus 5
- CONNECT_TO_GRID=true
- APPIUM=true
- SELENIUM_HOST=selenium_hub
- AUTO_RECORD=true
stages:
- docker-login
- build-robot
- setup-test
- run-test
- docker-down
docker-login:
stage: docker-login
tags:
- docker
rules:
- if: $CI_MERGE_REQUEST_ID
when: never
- if: $CI_COMMIT_REF_NAME =~ "main"
script:
- docker login -u $ARTIFACTORY_USER -p $ARTIFACTORY_PASSWORD $ARTIFACTORY_REGISTRY
build-robot:
stage: build-robot
tags:
- docker
rules:
- if: $CI_MERGE_REQUEST_ID
when: never
- if: $CI_COMMIT_REF_NAME =~ "main"
script:
- docker build -t qa/robot:latest -f robot/Dockerfile robot
setup-test:
stage: setup-test
tags:
- docker
rules:
- if: $CI_MERGE_REQUEST_ID
when: never
- if: $CI_COMMIT_REF_NAME =~ "main"
script:
- docker-compose -f docker-compose.yaml up -d
- docker ps
run-login-test:
stage: run-test
tags:
- docker
rules:
- if: $CI_MERGE_REQUEST_ID
when: never
- if: $CI_COMMIT_REF_NAME =~ "main"
script:
- docker ps
- docker run --network mobile_driver_test_automation_default --rm --mount "type=bind,src=${CI_PROJECT_DIR}/robot/Reports,dst=/app/reports"qa/robot:latest python3 -m robot -d /app/reports /app/Tests/Login.robot
artifacts:
when: always
paths:
- robot/Reports/report.html
expire_in: 3 day
docker-down:
stage: docker-down
tags:
- docker
rules:
- if: $CI_MERGE_REQUEST_ID
when: never
- if: $CI_COMMIT_REF_NAME =~ "main"
script:
- docker-compose -f docker-compose.yaml down
robot framework script:
*** Settings ***
Library AppiumLibrary
Library Process
*** Test Cases ***
Init Page Assertion Design Chaneg Path
Open Application http://appium_server:4723/wd/hub app=/app/robot/Tests/apk/driver.apk autoGrantPermissions=true platformName=Android deviceName=Nexus 5 appPackage=packageName appActivity=ActivityName
Log "app opened succesfully"
and also my Dockerfile and project path picture:
FROM python:3.9
WORKDIR /app
COPY . .
RUN pip install -r requirements.txt

Answer 1

You're trying to configure your tests to talk to http://appium_server:4723/wd/hub. In the Compose configuration, though, you specify
services:
appium_server:
network_mode: "service:selenium_hub"
This network_mode: setting is a very unusual setting that causes the appium_server container to not have its own network identity, but instead run inside the selenium_hub container's network namespace. I'm not clear when you'd need this setting, beyond programs that have incorrectly hard-coded localhost as the location of some other service; making the service location configurable through an environment variable would be a better solution.
I think either of two things would work:
Delete the network_mode: line. It's a strange configuration and hopefully unnecessary.
Configure your tests to use selenium_hub as the destination host name, because that's where this container actually is on the Docker internal network.