diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 76426dc..5403b34 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -14,6 +14,10 @@ jobs:
         run: ls -al
       - name: Change permission for test keys
         run: make permissions
+      - name: Install docker compose
+        run: |
+          curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
+          chmod +x /usr/local/bin/docker-compose
       - name: Build docker-compose stack
         run: docker-compose -f docker-compose.yml up -d
       - name: Check running containers
diff --git a/lib/control_node/host.ex b/lib/control_node/host.ex
index c04aacf..2091a06 100644
--- a/lib/control_node/host.ex
+++ b/lib/control_node/host.ex
@@ -38,7 +38,7 @@ defmodule ControlNode.Host do
   @spec init_release(SSH.t(), binary, atom) :: :ok | :failure | {:error, any}
   def init_release(%SSH{} = host_spec, init_file, command) do
     with {:ok, %SSH.ExecStatus{exit_code: 0}} <-
-           SSH.exec(host_spec, "nohup #{init_file} #{command} &", true) do
+           SSH.exec(host_spec, "#{init_file} #{command}", true) do
       :ok
     end
   end
diff --git a/lib/control_node/host/ssh.ex b/lib/control_node/host/ssh.ex
index ecdaeeb..563f99f 100644
--- a/lib/control_node/host/ssh.ex
+++ b/lib/control_node/host/ssh.ex
@@ -13,7 +13,7 @@ defmodule ControlNode.Host.SSH do
             conn: nil,
             hostname: nil,
             via_ssh_agent: false,
-            env_vars: %{}
+            env_vars: nil
 
   @typedoc """
   SSH spec defines a host which shall be used to connect and deploy releases. Following fields should be
@@ -129,6 +129,7 @@ defmodule ControlNode.Host.SSH do
   @spec exec(t, list | binary) :: {:ok, ExecStatus.t()} | :failure | {:error, any}
   def exec(ssh_config, commands, skip_eof \\ false) do
     env_vars = to_shell_env_vars(ssh_config.env_vars, :inline)
+    Logger.debug("Processed env var", env_vars: env_vars)
     do_exec(ssh_config, "#{env_vars} #{commands}", skip_eof)
   end
 
@@ -139,6 +140,8 @@ defmodule ControlNode.Host.SSH do
   end
 
   defp do_exec(ssh_config, script, skip_eof) when is_binary(script) do
+    Logger.debug("Executing script on host", host: ssh_config.host, script: script)
+
     with {:ok, conn} <- connect_host(ssh_config),
          {:ok, channel_id} <- :ssh_connection.session_channel(conn, @timeout),
          :success <- :ssh_connection.exec(conn, channel_id, to_list(script), @timeout) do
@@ -151,18 +154,18 @@ defmodule ControlNode.Host.SSH do
     end
   end
 
-  @spec to_shell_env_vars(Map.t(), :inline | :export) :: String.t()
-  defp to_shell_env_vars(%{}, _), do: ""
+  @spec to_shell_env_vars(Map.t() | nil, :inline | :export) :: String.t()
+  defp to_shell_env_vars(nil, _), do: ""
 
   defp to_shell_env_vars(env_vars, :inline) do
-    Enum.map(env_vars, "", fn {key, value}, acc ->
+    Enum.map(env_vars, fn {key, value} ->
       "#{key}=#{value}"
     end)
     |> Enum.join(" ")
   end
 
   defp to_shell_env_vars(env_vars, :export) do
-    Enum.map(env_vars, "", fn {key, value}, acc ->
+    Enum.map(env_vars, fn {key, value} ->
       "export #{key}=#{value}"
     end)
     |> Enum.join("; ")
diff --git a/lib/control_node/release.ex b/lib/control_node/release.ex
index 5325769..e91a579 100644
--- a/lib/control_node/release.ex
+++ b/lib/control_node/release.ex
@@ -379,7 +379,7 @@ defmodule ControlNode.Release do
          :ok <- Host.upload_file(host_spec, host_release_path, tar_file),
          :ok <- Host.extract_tar(host_spec, host_release_path, host_release_dir) do
       init_file = Path.join(host_release_dir, "bin/#{release_spec.name}")
-      Host.init_release(host_spec, init_file, :start)
+      Host.init_release(host_spec, init_file, :daemon)
     end
   end
 
diff --git a/test/control_node/host/ssh_test.exs b/test/control_node/host/ssh_test.exs
index c798993..8f15df0 100644
--- a/test/control_node/host/ssh_test.exs
+++ b/test/control_node/host/ssh_test.exs
@@ -33,20 +33,19 @@ defmodule ControlNode.Host.SSHTest do
     end
 
     test "run list of commands on remote SSH server", %{ssh_config: ssh_config} do
+      ssh_config = Map.put(ssh_config, :env_vars, %{"ENV_TEST" => "hello world"})
       assert {:ok, %SSH.ExecStatus{exit_status: :success}} =
-               SSH.exec(ssh_config, [
-                 "export ENV_TEST='hello world'",
-                 "echo $ENV_TEST > /tmp/config.txt"
-               ])
+               SSH.exec(ssh_config, ["echo $ENV_TEST > /tmp/config.txt"])
 
       assert {:ok, "hello world\n"} = File.read("/tmp/config.txt")
     end
 
     test "runs script on remote SSH server", %{ssh_config: ssh_config} do
+      ssh_config = Map.put(ssh_config, :env_vars, %{"ENV_TEST" => "hello world"})
+
       script = """
       #!/bin/sh
 
-      export ENV_TEST='hello world';
       echo $ENV_TEST > /tmp/config.txt
       """