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Last pushed: 21 hours ago
Short Description
apache2 webserver with Lets Encrypt
Full Description

apache2 webserver with Let's Encrypt on Ubuntu

Let's Encrypt is a service generating HTTPS certificates for you and installing them in your apache2 webserver.

Use with own Dockerfile

Start with creating a Dockerfile
FROM whiledo/letsencrypt-apache-ubuntu
... deploy your app, or do other stuff
CMD ["apache2ctl", "-D", "FOREGROUND"]

build it with
docker build -t myname/myapp .
(Be sure to be in the directory of your Dockerfile)

run with
docker run -d --name myappcontainer -p 80:80 -p 443:443 myname/myapp

Just run without new Dockerfile

if you don't want to create a Dockerfile, you can just run
docker run -d --name myappcontainer -p 80:80 -p 443:443 whiledo/letsencrypt-apache-ubuntu

Install the https certificate

It is important to expose port 80, because the Let's Encrypt Server will try to find

Now log in to the running container
docker exec -it myappcontainer /bin/bash

And install the https certificate
/data/letsencrypt/letsencrypt-auto --apache --email --agree-tos -d

I don't want to run on ports 80 and 443

Let's Encrypt wants you to make ports 80 and 443 available when running the automatic installer.
If you don't want to expose ports 80 and 443, you could generate the certificates and install them in the apache server manually.
Look in the Let's Encrypt Repository for more information.
It is a command starting with /letsencrypt-auto certonly --standalone ....

When you want to run the automatic installer, you can use a trick.
Let's say you want 9980 to be your HTTP port and 9981 to be your HTTPS port.

We'll use the docker-forward image provided by njohnson to forward TCP traffic. The images is based on socat.

We create a container forwarding TCP traffic from port 80 to 9980
docker run -d --name forward80 -p 80:80 --env PORT_LOCAL=80 --env --env PORT_REMOTE=9980 njohnson/docker-forward

and a container forwarding TCP traffic from port 443 to 9981
docker run -d --name forward443 -p 443:443 --env PORT_LOCAL=443 --env --env PORT_REMOTE=9981 njohnson/docker-forward

Now go on with the steps at "Install the https certificate".

After finishing stop the forward-containers
docker stop forward80 && docker rm forward80 && docker stop forward443 && docker rm forward443

Docker Pull Command
Source Repository

Comments (1)
a month ago

Hi, can I install the HTTPS certificate within the docker file without having to log into the container?