deploy-with-https.mo

Owner: Sammy Teillet

Control points

If, as an expert of docker, you want to adapt the standard to the context of your project, you have to check that:

• server listen port 80 and 443

• server redirect port 80 to 443 with 301: Moved Permanently

• proxy should renew certificates automatically before they expire (letsencrypt certificates have 90 days of validity)

• you should get at least A when checking https://www.ssllabs.com/ssltest/

• you should check in the report of https://www.ssllabs.com/ssltest/ that the server devices range cover your definition of DONE: eg, if you need to support old IE or old android, you have to lower the security enough for compatibility

Prerequisites

• You have a staging environment with docker

• You can ssh to the server

• Make sure you have the docker rights sudo usermod -aG docker $YOUR_USER_NAME

Steps (~15 min)

Install the nginx-proxy companion (~5 min)

• Connect to your server ssh [e-mail]

• Clone the nginx-proxy-companion project on the server at the root of the server.

git clone [e-mail]:evertramos/docker-compose-letsencrypt-nginx-proxy-companion.git

• Create a .env file

cd docker-compose-letsencrypt-nginx-proxy-companion
cp ./.env.sample .env

• Set the NGINX_FILES_PATH=/srv/nginx/data in the .env

  • vim ./.env

  • line 41 replace NGINX_FILES_PATH=/srv/nginx/data(or a different path if you prefer)

CHECK

Try to launch the companion by running:

./start.sh

You should have the following error because the port 80 is already used by your app docker:

ERROR: for nginx-web  Cannot start service nginx-web: driver failed programming external connectivity on endpoint nginx-web (4c0105fe57d370c99c0a143c967d1b8737006a4138618e1defebc4bab4e42d11): Bind for 0.0.0.0:80 failed: port is already allocated

Configure your project to use the companion (~5 min)

• Remove the binding 80 port command, but expose it

version: '3'
services: 
  your-web-app: #It should contain port: "80:80"
    # ... 
-   ports:
-     - "80:80"
+   expose:
+     - 80

• Configure the app to use the network created by the companion (webproxy is the default name)

version: '3'
services: 
    # ... 

+networks:
+  default:
+     external:
+        name: webproxy

GO FURTHER

https://blog.docker.com/2016/12/understanding-docker-networking-drivers-use-cases/

• In your project set 3 environment variable: VIRTUAL_HOST, LETSENCRYPT_HOST, LETSENCRYPT_EMAIL. The email will be used by Letsencrypt to notify you if the certificate expire.There are 2 ways:

  • In the docker-compose file

  • In your prod.env file that is read by your Dockerfile.

RECOMENDED WAY

Update the .env file of your web-app docker

• In the ./env/prod.env add the following:

#... other env variable
+ VIRTUAL_HOST=my.domain.cloud.bam.tech
+ LETSENCRYPT_HOST=my.domain.cloud.bam.tech
+ LETSENCRYPT_EMAIL=[e-mail]

OTHER solution

If you have no .env file you an also Update the docker-compose-prod file

version: '3'
services: 
  your-web-app: #It should contain port: "80:80"
    # ... 
    environment:
+      - VIRTUAL_HOST=my.domain.cloud.bam.tech
+      - LETSENCRYPT_HOST=my.domain.cloud.bam.tech
+      - LETSENCRYPT_EMAIL=[e-mail]

Make the switch (~5 min)

BUSINESS INTERRUPTION

You will have to shut down your docker (so the port 80 is available), so during this step your domain won't be accessible.

• Cut your app docker:

cd your-project-directory
docker-compose -f docker-compose-prod.yml down

• Start the companion (go to the companion directory):

cd ../docker-compose-letsencrypt-nginx-proxy-companion
./start.sh

• Launch your project docker again:

cd -
docker-compose -f docker-compose-prod.yml up -d

CHECK

• Check the validity of your domain, go to https://your.domain
• Go there and check your domain. Useful tip: go to the Handshake Simulation section and check the supported devices.