diff --git a/Dockerfile b/Dockerfile
index 93b5b4b..013c27d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,4 +2,4 @@ FROM        alpine:3.9
 COPY        mittnite /usr/bin/mittnite
 EXPOSE      9102
 ENTRYPOINT  ["mittnite"]
-CMD         ["--config-dir", "/etc/mittnite.d"]
\ No newline at end of file
+CMD         ["up","--config-dir", "/etc/mittnite.d"]
\ No newline at end of file
diff --git a/README.md b/README.md
index 7ea500f..9591a35 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ It offers the following features:
 Start as follows:
 
 ```
-$ mittnite --config-dir /etc/mittnite.d
+$ mittnite up --config-dir /etc/mittnite.d
 ```
 
 Or use it in a container image:
@@ -25,10 +25,10 @@ Or use it in a container image:
 FROM quay.io/mittwald/mittnite:stable
 COPY nginx.hcl /etc/mittnite.d/webserver.hcl
 COPY fpm.hcl /etc/mittnite.d/fpm.hcl
-CMD ["-.config-dir", "/etc/mittnite.d"]
+CMD ["up", "--config-dir", "/etc/mittnite.d"]
 ```
 
-The directory specified with `--config-dir` can contain any number of `.hcl` configuration files; all files in that directory are loaded by Mittnite on startup and can contain any of the configuration directives described in the following section:
+The directory specified with `--config-dir` or the shorthand `-c` can contain any number of `.hcl` configuration files; all files in that directory are loaded by Mittnite on startup and can contain any of the configuration directives described in the following section:
 
 ## Configuration directives
 
diff --git a/cmd/root.go b/cmd/root.go
index 330b73b..3c8a6f2 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -16,6 +16,7 @@ var rootCmd = &cobra.Command{
 	Short: "Mittnite - Smart init system for containers",
 	Long:  "Mittnite is a small, but smart init system designed for usage as `ENTRYPOINT` in container images.",
 	Run: func(cmd *cobra.Command, args []string) {
+		log.Warn("Using mittnite without 'up'. This will change in future releases!")
 		up.Run(cmd, args)
 	},
 }
diff --git a/go.mod b/go.mod
index d3630bb..2712f61 100644
--- a/go.mod
+++ b/go.mod
@@ -14,7 +14,6 @@ require (
 	github.com/onsi/gomega v1.5.0 // indirect
 	github.com/sirupsen/logrus v1.4.2
 	github.com/spf13/cobra v0.0.5
-	github.com/spf13/viper v1.3.2
 	github.com/streadway/amqp v0.0.0-20190404075320-75d898a42a94
 	github.com/stretchr/testify v1.3.0 // indirect
 	github.com/tidwall/pretty v0.0.0-20190325153808-1166b9ac2b65 // indirect
diff --git a/pkg/probe/helper.go b/internal/helper/helper.go
similarity index 68%
rename from pkg/probe/helper.go
rename to internal/helper/helper.go
index 1e9919c..00620e7 100644
--- a/pkg/probe/helper.go
+++ b/internal/helper/helper.go
@@ -1,11 +1,11 @@
-package probe
+package helper
 
 import (
 	"os"
 	"strings"
 )
 
-func resolveEnv(in string) string {
+func ResolveEnv(in string) string {
 	if strings.HasPrefix(in, "ENV:") {
 		return os.Getenv(in[4:])
 	}
diff --git a/internal/types/types.go b/internal/types/types.go
index 5b9ec55..3661670 100644
--- a/internal/types/types.go
+++ b/internal/types/types.go
@@ -6,8 +6,8 @@ type Credentials struct {
 }
 
 type Host struct {
-	URL  string
-	Port string
+	Hostname string
+	Port     string
 }
 
 type MySQLConfig struct {
diff --git a/pkg/probe/probe_amqp.go b/pkg/probe/probe_amqp.go
index e9831d6..9283b57 100644
--- a/pkg/probe/probe_amqp.go
+++ b/pkg/probe/probe_amqp.go
@@ -2,6 +2,7 @@ package probe
 
 import (
 	"fmt"
+	"github.com/mittwald/mittnite/internal/helper"
 	"github.com/mittwald/mittnite/internal/types"
 	log "github.com/sirupsen/logrus"
 	"github.com/streadway/amqp"
@@ -21,11 +22,11 @@ type amqpProbe struct {
 }
 
 func NewAmqpProbe(cfg *types.AmqpConfig) *amqpProbe {
-	cfg.User = resolveEnv(cfg.User)
-	cfg.Password = resolveEnv(cfg.Password)
-	cfg.URL = resolveEnv(cfg.URL)
-	cfg.Port = resolveEnv(cfg.Port)
-	cfg.VirtualHost = resolveEnv(cfg.VirtualHost)
+	cfg.User = helper.ResolveEnv(cfg.User)
+	cfg.Password = helper.ResolveEnv(cfg.Password)
+	cfg.Hostname = helper.ResolveEnv(cfg.Hostname)
+	cfg.Port = helper.ResolveEnv(cfg.Port)
+	cfg.VirtualHost = helper.ResolveEnv(cfg.VirtualHost)
 	if cfg.VirtualHost == "" {
 		cfg.VirtualHost = defaultVirtualHost
 	}
@@ -33,7 +34,7 @@ func NewAmqpProbe(cfg *types.AmqpConfig) *amqpProbe {
 	connCfg := amqpProbe{
 		user:        cfg.User,
 		password:    cfg.Password,
-		hostname:    cfg.URL,
+		hostname:    cfg.Hostname,
 		virtualHost: cfg.VirtualHost,
 		port:        cfg.Port,
 	}
diff --git a/pkg/probe/probe_http.go b/pkg/probe/probe_http.go
index fb23806..3029730 100644
--- a/pkg/probe/probe_http.go
+++ b/pkg/probe/probe_http.go
@@ -2,6 +2,7 @@ package probe
 
 import (
 	"fmt"
+	"github.com/mittwald/mittnite/internal/helper"
 	"github.com/mittwald/mittnite/internal/types"
 	log "github.com/sirupsen/logrus"
 	"net/http"
@@ -17,19 +18,19 @@ type httpGetProbe struct {
 }
 
 func NewHttpProbe(cfg *types.HttpGetConfig) *httpGetProbe {
-	cfg.Scheme = resolveEnv(cfg.Scheme)
-	cfg.URL = resolveEnv(cfg.URL)
-	cfg.Port = resolveEnv(cfg.Port)
-	cfg.Path = resolveEnv(cfg.Path)
-	cfg.Timeout = resolveEnv(cfg.Timeout)
+	cfg.Scheme = helper.ResolveEnv(cfg.Scheme)
+	cfg.Hostname = helper.ResolveEnv(cfg.Hostname)
+	cfg.Port = helper.ResolveEnv(cfg.Port)
+	cfg.Path = helper.ResolveEnv(cfg.Path)
+	cfg.Timeout = helper.ResolveEnv(cfg.Timeout)
 
 	if cfg.Scheme == "" {
 		cfg.Scheme = "http"
 	}
 
-	host := cfg.Host.URL
+	host := cfg.Host.Hostname
 	if cfg.Host.Port != "" {
-		host += fmt.Sprintf("%s:%s", cfg.URL, cfg.Port)
+		host += fmt.Sprintf("%s:%s", cfg.Hostname, cfg.Port)
 	}
 
 	connCfg := httpGetProbe{
diff --git a/pkg/probe/probe_mongodb.go b/pkg/probe/probe_mongodb.go
index 754bbd7..d1463e6 100644
--- a/pkg/probe/probe_mongodb.go
+++ b/pkg/probe/probe_mongodb.go
@@ -3,6 +3,7 @@ package probe
 import (
 	"context"
 	"fmt"
+	"github.com/mittwald/mittnite/internal/helper"
 	"github.com/mittwald/mittnite/internal/types"
 	log "github.com/sirupsen/logrus"
 	"go.mongodb.org/mongo-driver/mongo"
@@ -21,15 +22,15 @@ type mongoDBProbe struct {
 }
 
 func NewMongoDBProbe(cfg *types.MongoDBConfig) *mongoDBProbe {
-	cfg.User = resolveEnv(cfg.User)
-	cfg.Password = resolveEnv(cfg.Password)
-	cfg.URL = resolveEnv(cfg.URL)
-	cfg.Database = resolveEnv(cfg.Database)
+	cfg.User = helper.ResolveEnv(cfg.User)
+	cfg.Password = helper.ResolveEnv(cfg.Password)
+	cfg.Hostname = helper.ResolveEnv(cfg.Hostname)
+	cfg.Database = helper.ResolveEnv(cfg.Database)
 
 	connCfg := mongoDBProbe{
 		user:     cfg.User,
 		password: cfg.Password,
-		hostname: cfg.URL,
+		hostname: cfg.Hostname,
 		database: cfg.Database,
 		port:     cfg.Port,
 	}
diff --git a/pkg/probe/probe_mysql.go b/pkg/probe/probe_mysql.go
index dbb952f..96de04c 100644
--- a/pkg/probe/probe_mysql.go
+++ b/pkg/probe/probe_mysql.go
@@ -4,6 +4,7 @@ import (
 	"database/sql"
 	"fmt"
 	"github.com/go-sql-driver/mysql"
+	"github.com/mittwald/mittnite/internal/helper"
 	"github.com/mittwald/mittnite/internal/types"
 	log "github.com/sirupsen/logrus"
 )
@@ -13,11 +14,11 @@ type mySQLProbe struct {
 }
 
 func NewMySQLProbe(cfg *types.MySQLConfig) *mySQLProbe {
-	cfg.User = resolveEnv(cfg.User)
-	cfg.Database = resolveEnv(cfg.Database)
-	cfg.Password = resolveEnv(cfg.Password)
-	cfg.URL = resolveEnv(cfg.URL)
-	cfg.Port = resolveEnv(cfg.Port)
+	cfg.User = helper.ResolveEnv(cfg.User)
+	cfg.Database = helper.ResolveEnv(cfg.Database)
+	cfg.Password = helper.ResolveEnv(cfg.Password)
+	cfg.Hostname = helper.ResolveEnv(cfg.Hostname)
+	cfg.Port = helper.ResolveEnv(cfg.Port)
 
 	connCfg := mysql.Config{
 		User:   cfg.User,
diff --git a/pkg/probe/probe_redis.go b/pkg/probe/probe_redis.go
index 4fe67b9..e3723b3 100644
--- a/pkg/probe/probe_redis.go
+++ b/pkg/probe/probe_redis.go
@@ -3,6 +3,7 @@ package probe
 import (
 	"fmt"
 	"github.com/go-redis/redis"
+	"github.com/mittwald/mittnite/internal/helper"
 	"github.com/mittwald/mittnite/internal/types"
 	log "github.com/sirupsen/logrus"
 )
@@ -13,12 +14,12 @@ type redisProbe struct {
 }
 
 func NewRedisProbe(cfg *types.RedisConfig) *redisProbe {
-	cfg.URL = resolveEnv(cfg.URL)
-	cfg.Password = resolveEnv(cfg.Password)
-	cfg.Port = resolveEnv(cfg.Port)
+	cfg.Hostname = helper.ResolveEnv(cfg.Hostname)
+	cfg.Password = helper.ResolveEnv(cfg.Password)
+	cfg.Port = helper.ResolveEnv(cfg.Port)
 
 	return &redisProbe{
-		addr:     fmt.Sprintf("%s:%s", cfg.URL, cfg.Port),
+		addr:     fmt.Sprintf("%s:%s", cfg.Hostname, cfg.Port),
 		password: cfg.Password,
 	}
 }