It should be very convenient and dynamic, if we can set our environment variable on docker build time.
since I want to turn graphql playground on and off during the production deployment, I already use the
NODE_ENV to control the playground feature in the .env file.
in .net file
NODE_ENV=dev
GraphQLModule.forRoot({
playground: process.env.NODE_ENV === 'dev',
debug: process.env.NODE_ENV === 'dev',
autoSchemaFile: true,
}),
we can use ARG to set a variable in the dockerfile that we can pass in during docker build run.
ARG node_env_var
ENV NODE_ENV=$node_env_var
RUN echo $node_env_var
here is the full content of Dockfile
FROM node:14 as production
ARG node_env_var
ENV NODE_ENV=$node_env_var
RUN echo $node_env_var
WORKDIR /usr/src/api
COPY package.json .
COPY yarn.lock .
RUN yarn global add @nestjs/cli
RUN yarn install --production=true
## install NIC s a computer networking utility for reading from and
# writing to network connections using TCP or UDP.
RUN apt-get -q update && apt-get -qy install netcat
COPY . .
RUN yarn build
CMD ["sh", "-c", "yarn typeorm migration:run && yarn start:prod"]
in the Docker-compose.yml file we can set the args variable. when I run the deployment in the production environment, i can simply change the node_env_var: production
build:
context: server
target: production
dockerfile: Dockerfile
args:
node_env_var: dev
here is the docker-compse.yml file
version: "3.8"
services:
mysqldb:
image: mysql
environment:
- MYSQL_ROOT_PASSWORD=Mys0l@123456
- MYSQL_DATABASE=hyrecar
ports:
- 3306:3306
command: --default-authentication-plugin=mysql_native_password
networks:
- shared-network
volumes:
- db-config:/etc/mysql
- db-data:/var/lib/mysql
- ./db/backup/files:/data_backup/data
#acting as a proxy
nginx:
image: nginx:latest
container_name: nginx-prod
volumes:
- ./nginx/nginx.conf:/etc/nginx/nginx.conf
ports:
- 81:80
command: /bin/sh -c "nginx -g 'daemon off;'"
depends_on:
api-prod:
condition: service_healthy
app-prod:
condition: service_started
networks:
- shared-network
api-prod:
container_name: nestjs_api_prod
image: nestjs_api_prod:1.0.0.0
build:
context: server
target: production
dockerfile: Dockerfile
args:
node_env_var: dev
command: sh -c './bin/wait-for -t 0 mysqldb:3306 -- yarn start:prod'
depends_on:
- mysqldb
networks:
- shared-network
ports:
- 9000:9000
restart: unless-stopped
healthcheck:
test: ["CMD", "curl", "http://api-prod:9000"]
interval: 5s
timeout: 3s
retries: 6
app-prod:
container_name: rect_app_prod
image: rect_app_prod:1.0.0
build:
context: web
target: production
dockerfile: Dockerfile
command: yarn run start:prod
ports:
- 3000:3000
networks:
- shared-network
restart: unless-stopped
#intialize network
networks:
shared-network:
#Initializing docker compose volumes
volumes:
db-config:
db-data:
for development and test environment deployment.
set node_env_var: dev in docker-compose.yml
run docker-compose build to rebuilt the container
execute docker-compose up to run all containers
in the production, we just need to change node_env_var: production
then we can run docker-compose build & docker-compose up to turn off graphql playground feature for security reason.
Please Note you can not simply update the variable in the docker-compose yaml file and run docker-compose up since the variable is passing in at docker-compose build time, not the run time. so We have to run docker-compose build process to take the effect.
