Huge improvements for docs (#58)

docs/content/doc/setup/install-backend.md

@@ -0,0 +1,160 @@
+---
+date: "2019-02-12:00:00+02:00"
+title: "Install Backend"
+draft: false
+type: "doc"
+menu:
+  sidebar:
+    parent: "setup"
+---
+
+# Backend
+
+## Install from binary
+
+Download a copy of Vikunja from the [download page](https://vikunja.io/en/download/) for your architecture.
+
+{{< highlight bash >}}
+wget <download-url>
+{{< /highlight >}}
+
+### Verify the GPG signature
+
+Starting with version `0.7`, all releases are signed using pgp.
+Releases from `master` will always be signed.
+
+To validate the downloaded zip file use the signiture file `.asc` and the key `FF054DACD908493A`:
+
+{{< highlight bash >}}
+gpg --keyserver keyserver.ubuntu.com --recv FF054DACD908493A
+gpg --verify vikunja-0.7-linux-amd64-full.zip.asc vikunja-0.7-linux-amd64-full.zip
+{{< /highlight >}}
+
+### Set it up
+
+Once you've verified the signature, you need to unzip it and make it executable, you'll also need to 
+create a symlink to it so you can execute Vikunja by typing `vikunja` on your system.
+We'll install vikunja to `/opt/vikunja`, change the path where needed if you want to install it elsewhere.
+
+{{< highlight bash >}}
+mkdir -p /opt/vikunja
+unzip <vikunja-zip-file> -d /opt/vikunja
+chmod +x /opt/vikunja
+ln -s /opt/vikunja/vikunja /usr/bin/vikunja
+{{< /highlight >}}
+
+### Systemd service
+
+Take the following `service` file and adapt it to your needs:
+
+{{< highlight service >}}
+[Unit]
+Description=Vikunja
+After=syslog.target
+After=network.target
+# Depending on how you configured Vikunja, you may want to uncomment these:
+#Requires=mysql.service
+#Requires=mariadb.service
+#Requires=redis.service
+
+[Service]
+RestartSec=2s
+Type=simple
+WorkingDirectory=/opt/vikunja
+ExecStart=/usr/bin/vikunja
+Restart=always
+# If you want to bind Vikunja to a port below 1024 uncomment
+# the two values below
+###
+#CapabilityBoundingSet=CAP_NET_BIND_SERVICE
+#AmbientCapabilities=CAP_NET_BIND_SERVICE
+
+[Install]
+WantedBy=multi-user.target
+{{< /highlight >}}
+
+If you've installed Vikunja to a directory other than `/opt/vikunja`, you need to adapt `WorkingDirectory` accordingly.
+
+Save the file to `/etc/systemd/system/vikunja.service`
+
+After you made all nessecary modifications, it's time to start the service:
+
+{{< highlight bash >}}
+sudo systemctl enable vikunja
+sudo systemctl start vikunja
+{{< /highlight >}}
+
+### Build from source
+
+To build vikunja from source, see [building from source]({{< ref "build-from-source.md">}}).
+
+### Updating
+
+Simply replace the binary and templates with the new version, then restart Vikunja.
+It will automatically run all nessecary database migrations.
+**Make sure to take a look at the changelog for the new version to not miss any manual steps the update may involve!**
+
+## Docker
+
+(Note: this assumes some familarity with docker)
+
+Usage with docker is pretty straightforward:
+
+{{< highlight bash >}}
+docker run -p 3456:3456 vikunja/api
+{{< /highlight >}}
+
+to run with a standard configuration.
+This will expose 
+
+You can mount a local configuration like so:
+
+{{< highlight bash >}}
+docker run -p 3456:3456 -v /path/to/config/on/host.yml:/app/vikunja/config.yml:ro vikunja/api
+{{< /highlight >}}
+
+Though it is recommended to use eviroment variables or `.env` files to configure Vikunja in docker.
+See [config]({{< ref "config.md">}}) for a list of available configuration options.
+
+### Docker compose
+
+To run the backend with a mariadb database you can use this example [docker-compose](https://docs.docker.com/compose/) file:
+
+{{< highlight yaml >}}
+version: '2'
+services:
+  api:
+    image: vikunja/api:latest
+    environment:
+      VIKUNJA_DATABASE_HOST: db
+      VIKUNJA_DATABASE_PASSWORD: supersecret
+      VIKUNJA_DATABASE_TYPE: mysql
+      VIKUNJA_DATABASE_USER: root
+      VIKUNJA_SERVICE_JWTSECRET: <generated secret>
+  db:
+    image: mariadb:10
+    environment:
+      MYSQL_ROOT_PASSWORD: supersecret
+      MYSQL_DATABASE: vikunja
+    volumes:
+    - ./db:/var/lib/mysql
+{{< /highlight >}}
+
+See [full docker example]({{< ref "full-docker-example.md">}}) for more varations of this config.
+
+## Debian packages
+
+Since version 0.7 Vikunja is also released as debian packages.
+
+To install these, grab a copy from [the download page](https://vikunja.io/en/download/) and run
+
+{{< highlight bash >}}
+dpkg -i vikunja.deb
+{{< /highlight >}}
+
+This will install the backend to `/opt/vikunja`.
+To configure it, use the config file in `/etc/vikunja/config.yml`.
+
+## Configuration
+
+See [available configuration options]({{< ref "config.md">}}).