Create database from one docker container in another - docker

Question

I have a program that builds servers automatically whenever we want stakeholders to test a new feature.
Currently I have the following setup:
Container 1 - all (contains nodejs, php and other dependencies)
Container 2 - db (contains the mysql database)
I'm aware that container 1 should be split but this will involve more unnecessary complexity to this stage of development.
Whenever a new feature is completed and ready to be deployed to a stage server we run: yarn run create:server --branchName=new-feature. This will create all of the configuration necessary to bring up our newly created server.
My problem is that whenever I run the command above I need to create a database in db container from all container:
mysql -u root -pxxxx -e "CREATE DATABASE IF NOT EXISTS `xxxx`"
The script main.ts is running in the context of all container, so it is necessary for all to communicate with db.
export const createDatabase = (subdomain: string) => {
const username = process.env.DB_USERNAME;
const password = process.env.DB_PASSWORD;
console.log(`[INFO] Creating database with name \`${subdomain}\``);
// triple back slash is necessary to avoid `command substitution` in some shells
if (isLocalEnviroment()) {
execSync(`docker run -it stage-manager-db mysql -u ${username} -p${password} -e "CREATE DATABASE IF NOT EXISTS \\\`${subdomain}\\\`"`)
} else {
execSync(`mysql -u ${username} -p${password} -e "CREATE DATABASE IF NOT EXISTS \\\`${subdomain}\\\`"`)
}
console.log(`[INFO] Database \`${subdomain}\` created successfully`);
}
On local environment we would like to use docker, while in production everything will sit in the same machine (db, frontendapp and api).
When trying to run the following command docker run -it stage-manager-db mysql -u root -ppassword -e "CREATE DATABASE IF NOT EXISTS master" from all I get
docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.
I have tried restarting the service with:
service docker restart
which gives
[ ok ] Starting Docker: docker.
but trying to communicate with db from all keeps getting the same error. Upon trying to service docker stop I get:
[....] Stopping Docker: dockerstart-stop-daemon: warning: failed to kill 825: No such process
No process in pidfile '/var/run/docker-ssd.pid' found running; none killed.
failed!
From now on I have tried the several links to fix this issue:
https://github.com/docker/for-linux/issues/52#issuecomment-333563492
https://askubuntu.com/questions/1146634/how-to-remove-docker-from-windows-subsystem
Cannot connect to the Docker daemon at unix:///var/run/docker.sock
Cant uninstall Docker from Ubuntu on WSL
How can I communicate from all container to db container?
Dockerfile
FROM php:7.4-fpm
# Install dependencies
RUN apt-get update && apt-get install -y \
build-essential \
libpng-dev \
libjpeg62-turbo-dev \
libfreetype6-dev \
locales \
zip \
jpegoptim optipng pngquant gifsicle \
vim \
unzip \
git \
curl \
libzip-dev \
libfontconfig1 \
libxrender1 \
libpng-dev \
make \
nginx \
apt-transport-https \
gnupg2 \
wget \
procps \
docker.io
# Install nodejs
RUN apt -y install curl dirmngr apt-transport-https lsb-release ca-certificates
RUN curl -sL https://deb.nodesource.com/setup_12.x | bash -
RUN apt -y install nodejs
# Install extensions
RUN docker-php-ext-install pdo_mysql exif zip pcntl gd
RUN docker-php-ext-configure gd --with-freetype --with-jpeg
RUN docker-php-ext-install -j$(nproc) gd
# Install composer
RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
RUN apt-get update && \
apt-get upgrade -y && \
apt-get install -y git
# Clear cache
RUN apt-get clean && rm -rf /var/lib/apt/lists/*
# Install Yarn
RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
RUN apt update && apt install yarn
# Install dependencies for this project
RUN yarn global add ts-node typescript
RUN useradd -m forge
# Copy existing application directory contents
COPY . /var/www
# Copy existing application directory permissions
COPY --chown=forge:forge . /var/forge
# Copy ssh keys
COPY ./config/ssh /home/forge/.ssh/
# Give right permissions to `ssh` keys
RUN chmod 600 /home/forge/.ssh/config
RUN chmod 600 /home/forge/.ssh/back_end_deploy_key
RUN chmod 600 /home/forge/.ssh/frontend_deploy_key
RUN chmod 644 /home/forge/.ssh/back_end_deploy_key.pub
RUN chmod 644 /home/forge/.ssh/frontend_deploy_key.pub
RUN chown forge:forge /home/forge/.ssh/*
# Up Docker
RUN service docker start
RUN usermod -aG docker forge
# Create folder for stage servers
RUN mkdir -p /var/www/stage-servers
# Give correct permissions to `stage-servers` folder
RUN chown forge:www-data /var/www/stage-servers
RUN chmod g+s /var/www/stage-servers
RUN chmod o-rwx /var/www/stage-servers
# Change current user to forge
USER forge
# Expose port 9000 and start php-fpm server
EXPOSE 9000
CMD ["php-fpm"]
docker-composer.yml
version: '3.7'
services:
all:
working_dir: /var/www/stage-manager
build:
context: .
dockerfile: Dockerfile
ports:
- "8080:80"
volumes:
- "./:/var/www/stage-manager"
- "./config/ssh:/root/.ssh"
networks:
- main
#MySQL Service
db:
image: mysql:5.7.22
container_name: stage-manager-db
restart: unless-stopped
tty: true
ports:
- "3306:3306"
environment:
MYSQL_DATABASE: whatever
MYSQL_ROOT_PASSWORD: password
SERVICE_TAGS: dev
SERVICE_NAME: mysql
volumes:
- dbdata:/var/lib/mysql/
networks:
- main
volumes:
project:
driver: local
driver_opts:
type: none
device: $PWD/
o: bind
dbdata:
driver: local
networks:
main:
I'm fairly new to docker so any approach that I might be doing wrong, please let me know. I have a feeling that this could be done much better so feel free to suggest improvements.

Answer 1

Update
** DO NOT DO THIS **
Instead of deleting this answer I will leave it here so others can see that this is not a secure/valid solution to this problem
By David Maze's comment:
Remember that anyone who can access the Docker socket has unrestricted root-level access over the whole host system. I would not add the Docker socket in casually here.
I was able to make it working by sharing the socket between my host OS and the all container.
docker-compose.yml
all:
working_dir: /var/www/stage-manager
build:
context: .
dockerfile: Dockerfile
ports:
- "8080:80"
volumes:
- "./:/var/www/stage-manager"
- "./config/ssh:/root/.ssh"
- "/var/run/docker.sock:/var/run/docker.sock" -> important part
networks:
- main