diff --git a/.devcontainer/bootstrap.sh b/.devcontainer/bootstrap.sh
new file mode 100755
index 0000000..0589bba
--- /dev/null
+++ b/.devcontainer/bootstrap.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+ROOT="$( cd "$( dirname "$(readlink -f "$0")" )/.." >/dev/null 2>&1 && pwd )"
+
+GITHUB_TOKEN=$(grep github_token ${ROOT}/secrets.yaml | cut -d' ' -f2)
+FILES=$(grep "{GITHUB_TOKEN}" ${ROOT}/requirements.txt | sed "s/{GITHUB_TOKEN}/${GITHUB_TOKEN}/g")
+
+python3 -m pip install --upgrade "${FILES}"
diff --git a/bin/devcontainer b/bin/devcontainer
index 54b0cfd..b071dc3 100755
--- a/bin/devcontainer
+++ b/bin/devcontainer
@@ -19,12 +19,18 @@ port="127.0.0.1:9123:8123"
 image="ludeeus/container:integration-debian"
 volume="${ROOT}:${workdir}"
 
+if [[ "${1}" == "--public" ]]; then
+    shift
+    log.info "Attention! The container is creating externally accessible."
+    port=$(echo "${port}" | sed "s/127.0.0.1/0.0.0.0/")
+fi
+
 cmd="${1:-menu}"
 
 docker_start() {
     tmp=$(echo "${port}" | cut -d":" -f-2)
     tmp=$(${docker} ps | grep "${tmp}" | awk "{print \$NF}")
-    if [ -n "${tmp}" ] ; then
+    if test -n "${tmp}" ; then
         log.info "Stop container ${tmp}..."
         ${docker} stop "${tmp}"
     fi
@@ -33,6 +39,13 @@ docker_start() {
     ${docker} start "${container}"
 }
 
+bootstrap() {
+    if test -f "${ROOT}/.devcontainer/bootstrap.sh"; then
+        log.info "Execute bootstrap.sh..."
+        ${docker} exec -it -w "${workdir}" "${container}" .devcontainer/bootstrap.sh "$1"
+    fi
+}
+
 if ! ${docker} ps -a | grep -wq ${container} && [[ "${cmd}" != "down" ]]; then
     log.info "Create container..."
     ${docker} create -it --name "${container}" -p "${port}" -v "${volume}" "${image}"
@@ -41,6 +54,7 @@ if ! ${docker} ps -a | grep -wq ${container} && [[ "${cmd}" != "down" ]]; then
 
     log.info "Initialize container..."
     ${docker} exec -it -w "${workdir}" "${container}" container install
+    bootstrap "install"
 fi
 
 if [[ "${cmd}" == "menu" ]]; then
@@ -88,6 +102,9 @@ case "${cmd}" in
         log.info "Interactive mode..."
         ${docker} exec -it "${container}" bash
         ;;
+    "bootstrap" )
+        bootstrap "${cmd}"
+        ;;
     * )
         if ! ${docker} ps | grep -wq ${container}; then
             docker_start
@@ -97,5 +114,9 @@ case "${cmd}" in
             log.info "After Home Assistant initialization you can access to system on http://localhost:9123/"
         fi
         ${docker} exec -it -w "${workdir}" "${container}" container "${cmd}"
+
+        if [[ "${cmd}" == "upgrade" ]]; then
+            bootstrap "${cmd}"
+        fi
         ;;
 esac
diff --git a/tests/test_config_flow.py b/tests/test_config_flow.py
index a369430..e1f5090 100644
--- a/tests/test_config_flow.py
+++ b/tests/test_config_flow.py
@@ -85,7 +85,7 @@ async def test_failed_config_flow(hass: HomeAssistant, error_on_get_data):
 
 
 # Our config flow also has an options flow, so we must test it as well.
-async def test_options_flow(hass):
+async def test_options_flow(hass: HomeAssistant):
     """Test an options flow."""
     # Create a new MockConfigEntry and add to HASS (we're bypassing config
     # flow entirely)
diff --git a/tests/test_switch.py b/tests/test_switch.py
index 7ea4906..477b531 100644
--- a/tests/test_switch.py
+++ b/tests/test_switch.py
@@ -5,6 +5,7 @@
 
 from homeassistant.components.switch import SERVICE_TURN_OFF, SERVICE_TURN_ON
 from homeassistant.const import ATTR_ENTITY_ID
+from homeassistant.core import HomeAssistant
 from pytest_homeassistant_custom_component.common import MockConfigEntry
 
 from custom_components.integration_blueprint import async_setup_entry
@@ -13,7 +14,7 @@
 from .const import MOCK_CONFIG
 
 
-async def test_switch_services(hass):
+async def test_switch_services(hass: HomeAssistant):
     """Test switch services."""
     # Create a mock entry so we don't have to go through config flow
     config_entry = MockConfigEntry(domain=DOMAIN, data=MOCK_CONFIG, entry_id="test")