diff --git a/back/installation.en.md b/back/installation.en.md
index a075c4e..6a1f515 100644
--- a/back/installation.en.md
+++ b/back/installation.en.md
@@ -24,7 +24,7 @@ The required sudoers configuration is `sudoers` and can be placed at `/etc/sudoe
 
 Install the `torrc` file as your Tor configuration. The `%include` statement inside it includes configuration files that will be placed inside any subdirectory of `/srv/servnest/tor-config/`, and is central to the way ServNest uses Tor.
 
-```shell
+```bash
 mkdir /srv/servnest/tor-config
 chown -R servnest:tor /srv/servnest/tor-config
 chmod -R u=rwX,g=rX,o= /srv/servnest/tor-config
@@ -43,14 +43,14 @@ A local primary Knot DNS server is used for both the registry and name server se
 For a public server, at least one secondary server should be set up. As zones can be dynamically added and deleted from the primary server, [catalog zones](https://zones.cat/) should be used. Configuration for a primary and a secondary server can be found respectively at `mkosi.extra/etc/knot/knot-primary.conf` and `mkosi.extra/etc/knot/knot-secondary.conf`.
 
 Add user `servnest` to group `knot` to allow ServNest to send commands to Knot:
-```shell
+```bash
 usermod -aG knot servnest
 ```
 
 #### Database configuration
 
 Knot configuration must be dynamic, therefore the configuration must stored in database, using:
-```shell
+```bash
 sudo -u knot knotc conf-import /etc/knot/knot.conf
 ```
 
@@ -61,17 +61,17 @@ The configuration file won't be used by Knot anymore.
 Database configuration can be changed using `knotc conf-*` commands, see [Knot DNS 3.2 documentation > Operation > Dynamic configuration](https://www.knot-dns.cz/docs/3.2/html/operation.html#dynamic-configuration). If you don't want to use that and don't want the best uptime possible, you can do the following steps to edit configuration through a plaintext file:
 
 1. Set `enabled` to `false` in `[reg]` and `[ns]` sections of `config.ini`
-2. `knotc conf-export /etc/knot/knot.conf`
+2. `knotc conf-export /etc/knot/knot.conf`{.bash}
 3. Edit `/etc/knot/knot.conf`
 4. Stop the Knot DNS daemon
-5. `sudo -u knot knotc conf-import /etc/knot/knot.conf`
+5. `sudo -u knot knotc conf-import /etc/knot/knot.conf`{.bash}
 6. Restart the Knot DNS daemon
-7. Check for errors in logs: `cat /var/log/knot/knot.log`
+7. Check for errors in logs: `cat /var/log/knot/knot.log`{.bash}
 8. Reverse the first step to `true`
 
 #### Directories
 
-```shell
+```bash
 mkdir /srv/servnest/reg /srv/servnest/ns
 chown -R servnest:knot /srv/servnest/reg /srv/servnest/ns
 chmod -R u=rwX,g=rwX,o= /srv/servnest/reg /srv/servnest/ns
@@ -81,37 +81,37 @@ chmod -R u=rwX,g=rwX,o= /srv/servnest/reg /srv/servnest/ns
 
 In addition to being described in configuration, registry zone files need to be initialized (i.e. SOA and NS records) inside `/srv/servnest/reg/`.
 
-### ServNest core
+### ServNest core {#test}
 
 Set up the source code inside `/srv/servnest/core/`:
-```shell
+```bash
 git clone https://code.antopie.org/servnest/servnest/ /srv/servnest/core
 ```
 
 Set permissions (except for `.git/` and `db/`):
-```shell
+```bash
 chmod -R u=rX,g=rX,o= $(find /srv/servnest/core -mindepth 1 -maxdepth 1 ! -name .git ! -name db)
 chown -R servnest:nginx $(find /srv/servnest/core -mindepth 1 -maxdepth 1 ! -name .git ! -name db)
 ```
 
 Generate new SQLite database:
-```shell
+```bash
 sqlite3 /srv/servnest/core/db/servnest.db < /srv/servnest/core/db/schema.sql
 ```
 
 Set permissions for database:
-```shell
+```bash
 chmod -R u=rwX,g=,o= /srv/servnest/core/db
 chown -R servnest: /srv/servnest/core/db
 ```
 
 Initialize database secret keys:
-```shell
+```bash
 echo "UPDATE params SET value = '$(openssl rand -hex 16)' WHERE name = 'username_salt';" | sqlite3 /srv/servnest/core/db/servnest.db
 ```
 
 Generate gettext translations:
-```shell
+```bash
 msgfmt /srv/servnest/core/locales/fr/C/LC_MESSAGES/messages.po -o /srv/servnest/core/locales/fr/C/LC_MESSAGES/messages.mo
 chmod u=r,g=,o= /srv/servnest/core/locales/fr/C/LC_MESSAGES/messages.mo
 chown servnest: /srv/servnest/core/locales/fr/C/LC_MESSAGES/messages.mo
@@ -148,7 +148,7 @@ Use `php-fpm.conf` as the PHP-FPM configuration (e.g. in `/etc/php/php-fpm.d/ser
 If you are setting up a testing environment, running `certbot` commands in this document without `--test-cert` is probably useless.
 
 Register an ACME account for Let's Encrypt (production and staging):
-```shell
+```bash
 certbot register --no-eff-email
 certbot register --no-eff-email --test-cert
 ```
@@ -156,13 +156,13 @@ certbot register --no-eff-email --test-cert
 Copy and adapt `certbot.ini` in `/etc/letsencrypt/servnest.ini`
 
 Install the Certbot deploy hook:
-```shell
+```bash
 cp certbot-deploy-hook.sh /root/
 chmod +x /root/certbot-deploy-hook.sh
 ```
 
 Getting a Let's Encrypt certificate for a wildcard domain requires an ACME [DNS challenge](https://letsencrypt.org/docs/challenge-types/#dns-01-challenge).
-```shell
+```bash
 cp certbot-dns-challenge-hook.sh /root/
 cp certbot-dns-cleanup-hook.sh /root/
 chmod +x /root/certbot-dns-challenge-hook.sh /root/certbot-dns-cleanup-hook.sh
@@ -176,14 +176,14 @@ nginx is used for 2 purposes:
 * acting as a reverse proxy before Apache, terminating TLS and enforcing headers policy
 
 Create the ACME HTTP challenge directory used by Certbot:
-```shell
+```bash
 mkdir /srv/servnest/acme
 chown nginx: /srv/servnest/acme
 chmod u=rX,g=,o= /srv/servnest/acme
 ```
 
 Generate default self-signed certificates:
-```shell
+```bash
 openssl req -subj '/' -new -newkey RSA:3072 -days 3650 -nodes -x509 -keyout /etc/ssl/private/servnest.key -out /etc/ssl/certs/servnest.crt
 openssl req -subj '/CN=servnest.test' -new -newkey RSA:3072 -days 3650 -nodes -x509 -keyout /etc/ssl/private/servnest.test.key -out /etc/ssl/certs/servnest.test.crt
 openssl req -subj '/CN=ht.servnest.test' -new -newkey RSA:3072 -days 3650 -nodes -x509 -keyout /etc/ssl/private/ht.servnest.test.key -out /etc/ssl/certs/ht.servnest.test.crt
@@ -195,7 +195,7 @@ A precise configuration is inside the `nginx/` directory. It requires the *heade
 This configuration listens on `[::1]:42443`, `127.0.0.1:42443`, `[::1]:42080` and `127.0.0.1:42080`. For a public server, these should be replaced respectively by `[::]:443`, `0.0.0.0:443`, `[::]:80` and `0.0.0.0:80`. Other addresses (i.e for Onion services and SFTPGo authentication) are not meant to be publicly exposed.
 
 Once this configuration is put in place, replace self-signed certificates by Let's Encrypt certificates:
-```shell
+```bash
 certbot certonly --config "/etc/letsencrypt/servnest.ini" -d "ht.servnest.example"
 certbot certonly --config "/etc/letsencrypt/servnest.ini" -d "servnest.example"
 ```
@@ -203,7 +203,7 @@ certbot certonly --config "/etc/letsencrypt/servnest.ini" -d "servnest.example"
 The nginx configuration provided above uses the self-signed key pair at the locations set in the `openssl` command above. Replace those by the ones Certbot told you and reload nginx configuration.
 
 Allow nginx to access certificates:
-```shell
+```bash
 mkdir -p /etc/letsencrypt/archive/ /etc/letsencrypt/live/
 chmod 710 /etc/letsencrypt/archive/ /etc/letsencrypt/live/
 chown root:nginx /etc/letsencrypt/archive/ /etc/letsencrypt/live/
@@ -217,7 +217,7 @@ Apache in distributions is usually named `httpd`, `apache` or `apache2`. Adapt t
 Apache configuration is inside the `apache/` directory. It runs Apache inside a chroot, though it is not required by the ServNest design. Some paths may need adaptation according to the distribution used (e.g. modules or logs).
 
 Set up the directory where Apache will be chrooted:
-```shell
+```bash
 mkdir /srv/servnest/ht
 cp -r /install/http-messages /srv/servnest/ht/http-messages
 chown -R root:root /srv/servnest/ht
@@ -225,14 +225,14 @@ chmod -R u=rX,g=rX,o=rX /srv/servnest/ht
 ```
 
 Set up the directory managed by SFTPGo users:
-```shell
+```bash
 mkdir /srv/servnest/ht/fs
 chown -R apache:sftpgo /srv/servnest/ht/fs
 chmod -R u=rX,g=rwX,o= /srv/servnest/ht/fs
 ```
 
 Set up the directory accessed by Apache and managed by ServNest that maps Web addresses to users directories using links:
-```shell
+```bash
 mkdir /srv/servnest/ht/uri
 mkdir /srv/servnest/ht/uri/ht.servnest.test # Subpath access
 chown -R servnest:apache /srv/servnest/ht/uri
@@ -240,7 +240,7 @@ chmod -R u=rwX,g=rX,o= /srv/servnest/ht/uri
 ```
 
 For Apache to work in a chroot, hardlinking some system dependencies inside the chroot may be needed:
-```shell
+```bash
 # Display dependencies paths
 ldd $(which httpd)
 
@@ -257,46 +257,46 @@ ln /usr/lib/libc.so.6 /srv/servnest/ht/usr/lib/libc.so.6
 
 The script at `../root/sftpgo.sh` can be used to build SFTPGo from source. You can use other methods to get SFTPGo builds.
 
-Create a directory for configuration: `mkdir /etc/sftpgo`
+Create a directory for configuration: `mkdir /etc/sftpgo`{.bash}
 
-Copy the systemd service: `cp /install/sftpgo.service /etc/systemd/system/sftpgo.service`
+Copy the systemd service: `cp /install/sftpgo.service /etc/systemd/system/sftpgo.service`{.bash}
 
-Allow listening on privileged ports: `setcap 'cap_net_bind_service=+ep' /usr/local/bin/sftpgo`
+Allow listening on privileged ports: `setcap 'cap_net_bind_service=+ep' /usr/local/bin/sftpgo`{.bash}
 
 #### Configure SFTPGo for ServNest
 
-Generate a key pair using `ssh-keygen -f /etc/sftpgo/ed25519 -t ed25519 -N "" -C ""`
+Generate a key pair using `ssh-keygen -f /etc/sftpgo/ed25519 -t ed25519 -N "" -C ""`{.bash}
 
 Compute key pair fingerprints:
-```shell
+```bash
 fp=($(ssh-keygen -l -f /etc/sftpgo/ed25519))
 echo ${fp[1]} > /etc/sftpgo/ed25519.fp
 ssh-keygen -lv -f /etc/sftpgo/ed25519 | tail -n +2 > /etc/sftpgo/ed25519.asciiart
 ```
 
-Copy the SFTPGo configuration: `cp /install/sftpgo.toml /etc/sftpgo/sftpgo.toml`. For a public setup, change `[[sftpd.bindings]]` sections in it to public IPs and port 22. You can optionally set up in `/etc/sftpgo/banner.txt` a message displayed to users when logging in.
+Copy the SFTPGo configuration: `cp /install/sftpgo.toml /etc/sftpgo/sftpgo.toml`{.bash}. For a public setup, change `[[sftpd.bindings]]` sections in it to public IPs and port 22. You can optionally set up in `/etc/sftpgo/banner.txt` a message displayed to users when logging in.
 
 Add user `servnest` to group `sftpgo`:
-```shell
+```bash
 usermod -aG sftpgo servnest
 ```
 
 Permissions for `/etc/sftpgo`:
-```shell
+```bash
 chown -R sftpgo: /etc/sftpgo
 chmod -R u=rX,g=rX,o= /etc/sftpgo
 chmod u=r,g=,o= /etc/sftpgo/ed25519
 ```
 
 Generate and add SSHFP record for the public SFTP domain:
-```shell
+```bash
 echo sftp.servnest.test. 86400 SSHFP 4 2 $(cut -d ' ' -f 2 /etc/sftpgo/ed25519.pub | base64 -d | sha256sum | cut -d ' ' -f 1) >> /srv/servnest/reg/servnest.test.zone
 ```
 
 ### ServNest core configuration
 
 Copy the configuration template to the actual configuration file and adapt it according to [the ServNest configuration reference](configuration.md):
-```shell
+```bash
 cp /srv/servnest/core/config.template.ini /srv/servnest/core/config.ini
 vim /srv/servnest/core/config.ini
 ```