chore: created asciidoc documents from documentation

closes: #74

.gitignore

@@ -29,3 +29,4 @@ bin/
 
 .env
 *_templ.go
+docs/out

api/web/templates/index.templ

@@ -5,7 +5,6 @@ import (
     "git.l--n.de/nclazz/soundwerft/api/web/templates/partials"
 )
 
-
 templ IndexPage(view web.View) {
     @partials.Document(view) {
         <h1>SoundWerft</h1>

docs/content/administration/command-line.adoc

@@ -0,0 +1,18 @@
+= Command Line
+
+== Usage
+
+[source,bash]
+----
+soundwerft [options] [arguments...]
+----
+
+== Options
+
+* +--help+, +-h+: show usage text and exit
+* +--config path+, +-c path+: path to an existing config file
+* +--log-level level+: log level to use throghout the app +debug | info | warn | error+, default: +info+
+* +--log-format format+: format of the logs +json | text+, default: +json+
+* +--host host+: hostname or IP address to bind to, default +0.0.0.0+
+* +--port port+: port on which to run http endpoints, default: +8080+
+* +--base-url path+: base url for links and redirects (useful when run behind a reverse proxy), default: +/+

docs/content/administration/environment-variables.adoc

@@ -0,0 +1,27 @@
+= Environment Variables
+
+The environment variables reflect the command-line options. If both a command-line option and an environment variable
+is present, the flag takes priority over the environment variable.
+
+All variables follow the format +SW_<option>+, i.e. the flag +--log-level+, becomes +SW_LOG_LEVEL+.
+
+The variables need to be defined before starting the app, for example:
+
+----
+SW_LOG_LEVEL=debug ./soundwerft
+----
+
+== Define in env-file
+Instead of defining each variable as an environment variable, an env-file can be used, in which all variables are defined.
+
+If a filed called +.env+ is present in the current working directory, it will automatically be used. 
+Otherwise, the file can be specified by starting the app with +--config / -c+ option.
+
+
+== Variables
+
+* +SW_LOG_LEVEL+: log level to use throughout the app +debug | info | warn | error+, default: +info+
+* +SW_LOG_FORMAT+: format of the logs +json | text+, default: +json+
+* +SW_HOST+: hostname or IP to bind to, default +0.0.0.0+
+* +SW_PORT+: port on which to run http endpoints, default +8080+
+* +SW_BASE_URL+: base url for links and redirects (useful when run behind a reverse proxy), default +/+