Gitlab ci with unit testing that connects to MySQL - go

Question

I have built a Golang project, I want to deploy the app when successfully tested with GitLab ci, but when do some tests, it fails because cannot connect to MySQL.
I want to use the Golang image and MySQL image in one stage.
This is my current pipeline. On stage test, on before script fails (/bin/bash: line 130: mysql: command not found)
# To contribute improvements to CI/CD templates, please follow the Development guide
at:
# https://docs.gitlab.com/ee/development/cicd/templates.html
# This specific template is located at:
# https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Go.gitlab-ci.yml
image: golang:latest
services:
- mysql:latest
stages:
- test
- build
- deploy
variables:
MYSQL_DATABASE: "db"
MYSQL_USER: "user"
MYSQL_PASSWORD: "password"
MYSQL_ROOT_PASSWORD: "password"
format:
stage: test
variables:
# Configure mysql environment variables (https://hub.docker.com/_/mysql/)
MYSQL_DATABASE: $MYSQL_DATABASE
MYSQL_PASSWORD: $MYSQL_PASSWORD
MYSQL_ROOT_PASSWORD: $MYSQL_ROOT_PASSWORD
services:
- mysql:latest
before_script:
- mysql --version
script:
- go fmt $(go list ./... | grep -v /vendor/)
- go vet $(go list ./... | grep -v /vendor/)
- go test -race $(go list ./... | grep -v /vendor/)
compile:
stage: build
script:
- mkdir -p typing
- go build -o typing ./...
artifacts:
paths:
- typing
deploy:
image: google/cloud-sdk:alpine
stage: deploy
allow_failure: true
script:
- "which ssh-agent || ( apt-get update -y && apt-get install openssh-client -y )"
# Run ssh-agent (inside the build environment)
- eval $(ssh-agent -s)
# Add the SSH key stored in SSH_PRIVATE_KEY variable to the agent store
- ssh-add <(echo "$SSH_PRIVATE_KEY" | base64 -d)
- mkdir -p ~/.ssh
- '[[ -f /.dockerenv ]] && echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config'
- (echo "$SSH_PRIVATE_KEY" | base64 -d) > file
- echo "$SSH_PUBLIC_KEY" > file.pub
- chmod 600 file
- echo $SERVICE_ACCOUNT > file.json
- gcloud auth activate-service-account --key-file file.json
- gcloud compute scp typing/* --project="project-id" --zone="zone" vm-name:/home/ubuntu
- ssh -i file ubuntu#public-ip 'sudo ./kill.sh; sudo ./start.sh'
artifacts:
paths:
- typing
How can I achieve that?
Thanks in advance.

Answer 1

In the stage test, the job is based on the golang image as a result it does not come packaged with the MySQL client.
In order to reach the MySQL service you defined you need to install the client
If I am not mistaken the Golang image is based on debian, so something like this
before_script:
- apt get-update
- apt get-install -y default-mysql-client
- mysql --version