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docker-limesurvey/README.md
Alex Sears c3a3e77b76 Add encryption nonce and secret box key to 5.0 images (#99)
Add encryption nonce and secret box key to 5.0 images

Signed-off-by: Alex Sears <me@alexsears.com>
2021-10-25 08:52:32 +02:00

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# LimeSurvey Docker
Dockerfile to build a [LimeSurvey](https://limesurvey.org) Image for the Docker container platform.
## Quick reference
- **Maintained by:** https://github.com/martialblog/
- **Where to get help:** [GitHub Issues](https://github.com/martialblog/docker-limesurvey/issues)
## Supported tags and respective Dockerfile links
- [`5-apache`, `5.<BUILD-NUMBER>-apache`, `latest` ](https://github.com/martialblog/docker-limesurvey/blob/master/5.0/apache/Dockerfile)
- [`5-fpm`, `5.<BUILD-NUMBER>-fpm`](https://github.com/martialblog/docker-limesurvey/blob/master/5.0/fpm/Dockerfile)
- [`5-fpm-alpine`, `5.<BUILD-NUMBER>-fpm-alpine`](https://github.com/martialblog/docker-limesurvey/blob/master/5.0/fpm-alpine/Dockerfile)
- [`3-apache`, `3.<BUILD-NUMBER>-apache`](https://github.com/martialblog/docker-limesurvey/blob/master/3.0/apache/Dockerfile)
- [`3-fpm`, `3.<BUILD-NUMBER>-fpm`](https://github.com/martialblog/docker-limesurvey/blob/master/3.0/fpm/Dockerfile)
- [`3-fpm-alpine`, `3.<BUILD-NUMBER>-fpm-alpine`](https://github.com/martialblog/docker-limesurvey/blob/master/3.0/fpm-alpine/Dockerfile)
# Using the Apache Image
The `apache` image comes with an Apache Webserver and PHP installed.
This image is also available in a `rootless` variant with `www-data` as default user and Apache listening on 8080. Starting from 5.0, the `rootless` variant is the default for Apache images.
## Apache Configuration
To change to Apache Webserver configuration, mount a Volume into the Container at:
- `/etc/apache2/sites-available/000-default.conf`
See the example configuration provided.
The Apache port can be specified by setting the environment variable `LISTEN_PORT` (e.g. `LISTEN_PORT=8080`). Starting from 5.0, Apache defaults to listening on a non-privilged port (8080) in inside the container.
# Using the fpm Image
To use the fpm image, you need an additional web server that can proxy http-request to the fpm-port of the container. See *docker-compose.fpm.yml* for example.
## Using the fpm Image with HTTPS
If you would like to run the fpm setup with https, you can get a free certificate from Letsencrypt. As an example, the configuration in *docker-compose.fpm-certbot.yml*
will take care of getting a certificate and installing it. Please note that you will have to adjust the domain name in the file *examples/nginx-certbot.conf* to match
the domain used in the *HOSTNAMES* variable in the docker-compose configuration file. If you added both the a domain and the hostname *www* within the domain,
*nginx-certbot.conf* needs to contain the domain without the hostname. E.g. if you set *"HOSTNAMES=example.org www.example.org"*, the path in *nginx-certbot.conf* needs
to contain *example.org*.
# Using an external database
LimeSurvey requires an external database (MySQL, PostgreSQL) to run. See *docker-compose.yml* for example.
# Persistent data
To preserve the uploaded files assign the upload folder into a volume. See *docker-compose.yml* for example.
Path: `/var/www/html/upload/surveys`
**Hint**: The mounted directory must be owned by the webserver user (e.g. www-data)
# LimeSurvey configuration
The entrypoint will create a new config.php if none is provided and run the LimeSurvey command line interface for installation.
**Hint**: Changing the *ADMIN_* configuration has no effect after the initial configuration. It's best to do this within the application.
To change to LimeSurvey configuration, you can mount a Volume into the Container at:
- `/my-data/config.php:/var/www/html/application/config/config.php`
**Hint**: If this configuration is present before the installation, the LimeSurvey Web Installer will not run automatically.
## Data encryption
LimeSurvey version 4.0 and newer support data encryption, this image give you these options:
* Provide a security.php file directly (volume)
* Provide encryption keys for the `security.php` file (environment variables)
* Provide nothing and get a non-persistent `security.php` file
For further details on the settings see: https://manual.limesurvey.org/Data_encryption
# Reverse Proxy configuration
## Traefik example
```
# BASE_URL = /limesurvey
"traefik.http.routers.limesurvey.rule=PathPrefix(`/limesurvey`)",
"traefik.http.routers.limesurvey.middlewares=strip-limesurvey@docker",
"traefik.http.middlewares.strip-limesurvey.stripprefix.prefixes=/limesurvey",
```
# Environment Variables
| Parameter | Description |
| --------- | ----------- |
| DB_TYPE | Database Type to use. mysql or pgsql |
| DB_HOST | Database server hostname |
| DB_PORT | Database server port |
| DB_SOCK | Database unix socket instead of host/port |
| DB_NAME | Database name |
| DB_TABLE_PREFIX | Database table prefix |
| DB_MYSQL_ENGINE | MySQL engine used for survey tables (values: MyISAM, InnoDB, default: MyISAM) |
| DB_USERNAME | Database user |
| DB_PASSWORD | Database user's password |
| ADMIN_USER | Initial LimeSurvey Admin User |
| ADMIN_NAME | Initial LimeSurvey Admin Username |
| ADMIN_EMAIL | Initial LimeSurvey Admin Email |
| ADMIN_PASSWORD | Initial LimeSurvey Admin Password |
| PUBLIC_URL | Public URL for public scripts |
| BASE_URL | Application Base URL |
| URL_FORMAT | URL Format. path or get |
| TABLE_SESSION | Enable table sessions (true) |
| SHOW_SCRIPT_NAME | Script name in URL (true|false). Default: true |
| DEBUG | Debug level (0, 1, 2). Default: 0 |
| DEBUG_SQL | SQL Debug level (0, 1, 2). Default 0 |
| ENCRYPT_KEYPAIR | Data encryption keypair |
| ENCRYPT_PUBLIC_KEY | Data encryption public key |
| ENCRYPT_SECRET_KEY | Data encryption secret key |
| ENCRYPT_NONCE | Data encryption nonce (used in 5.0) |
| ENCRYPT_SECRET_BOX_KEY | Data encryption secret box key (used in 5.0) |
| LISTEN_PORT | Apache: Listen port. Default: 8080 |
For further details on the settings see: https://manual.limesurvey.org/Optional_settings#Advanced_Path_Settings
# Running LimeSurvey with docker-compose
The easiest way to get a fully featured and functional setup is using a docker-compose file. Several examples are provided in the [repository](https://github.com/martialblog/docker-limesurvey).
```
docker-compose up
# Frontend
http://localhost:8080/
# Backend
http://localhost:8080/index.php/admin
```
# Running LimeSurvey with Helm
A Helm Chart for this Image can be used for deployments. Please refer to the Helm Repository for further details:
https://github.com/martialblog/helm-charts
# Upgrade Guide
These guides are only referring to the Docker Image, for details on the application users should consult the [official LimeSurvey documentation](https://manual.limesurvey.org/Upgrading_from_a_previous_version) for details.
## Upgrading the FPM Images
If you are using docker-compose to run the FPM Images, you need to stop the application and webserver Containers and delete the application volume:
```
$ docker volume ls
DRIVER VOLUME NAME
local docker-limesurvey_lime
$ docker volume rm docker-limesurvey_lime
```
## Upgrading to 5.0 from 4.x
The default user in the Container will now be *www-data* (uid 33 in Debian, uid 82 in Alpine), any volumes mounted need the corresponding permissions:
```
# Debian
$ ls -ln upload/
total 4
drwxr-xr-x 3 33 33 4096 Jun 3 13:51 surveys
```
```
# Alpine
$ ls -ln upload/
total 4
drwxr-xr-x 3 82 82 4096 Jun 3 13:51 surveys
```
If you are using the Apache2 Images, the default port will now be **8080**. Depending on your setup the port configurations might need adjustment.
# References
- https://www.limesurvey.org/
- https://github.com/LimeSurvey/LimeSurvey/