diff --git a/docker/docker-py3-kms-minimal/Dockerfile b/docker/docker-py3-kms-minimal/Dockerfile
index a4483d9..7000606 100644
--- a/docker/docker-py3-kms-minimal/Dockerfile
+++ b/docker/docker-py3-kms-minimal/Dockerfile
@@ -26,9 +26,7 @@ bash \
   tzdata \
   netcat-openbsd \
   && pip3 install --no-cache-dir -r /home/py-kms/requirements.txt \
-  && addgroup power_users  \
   && adduser -S py-kms -G users -s /bin/bash \
-  && usermod -aG power_users py-kms \
   && chown py-kms:users /home/py-kms \
   # Fix undefined timezone, in case the user did not mount the /etc/localtime
   && ln -sf /usr/share/zoneinfo/UTC /etc/localtime
diff --git a/docker/docker-py3-kms/Dockerfile b/docker/docker-py3-kms/Dockerfile
index 501da5b..a2f4c27 100644
--- a/docker/docker-py3-kms/Dockerfile
+++ b/docker/docker-py3-kms/Dockerfile
@@ -27,16 +27,12 @@ RUN apk add --no-cache --update \
   ca-certificates \
   tzdata \
   shadow \
-  sudo  \
   netcat-openbsd \
   && pip3 install --no-cache-dir -r /home/py-kms/requirements.txt \
   #&& apk del git build-base python3-dev \
   && mkdir /db/ \
-  && addgroup power_users  \
   && adduser -S py-kms -G users -s /bin/bash \
-  && usermod -aG power_users py-kms \
   && chown py-kms:users /home/py-kms \
-  && echo "py-kms ALL= NOPASSWD: /bin/usermod -u py-kms *" >/etc/sudoers.d/py-kms \
   # Fix undefined timezone, in case the user did not mount the /etc/localtime
   && ln -sf /usr/share/zoneinfo/UTC /etc/localtime
 
diff --git a/docker/entrypoint.py b/docker/entrypoint.py
index 575e32c..34a7e9a 100755
--- a/docker/entrypoint.py
+++ b/docker/entrypoint.py
@@ -31,7 +31,7 @@ def change_uid_grp():
     loggersrv.info(f'not root user, cannot change uid/gid.')
     return None
   user_db_entries = pwd.getpwnam("py-kms")
-  user_grp_db_entries = grp.getgrnam("power_users")
+  user_grp_db_entries = grp.getgrnam("users")
   uid = int(user_db_entries.pw_uid)
   gid = int(user_grp_db_entries.gr_gid)
   new_gid = int(os.getenv('GID', str(gid)))
@@ -66,13 +66,15 @@ def change_uid_grp():
 def change_tz():
   tz = os.getenv('TZ', 'etc/UTC')
   # TZ is not symlinked and defined TZ exists
-  if tz not in os.readlink('/etc/localtime') and os.path.isfile('/usr/share/zoneinfo/' + tz):
+  if tz not in os.readlink('/etc/localtime') and os.path.isfile('/usr/share/zoneinfo/' + tz) and hasattr(time, 'tzset'):
     loggersrv.info("Setting timzeone to %s" % tz )
+    # time.tzet() should be called on Unix, but doesn't exist on Windows.
     time.tzset()
 
 # Main
 if (__name__ == "__main__"):
   loggersrv.info("Log level: %s" % log_level)
+  loggersrv.debug("user id: %s" % os.getuid())
   change_tz()
   childProcess = subprocess.Popen(PYTHON3 + " -u /usr/bin/start.py", preexec_fn=change_uid_grp(), shell=True)
   def shutdown(signum, frame):
diff --git a/docker/requirements.txt b/docker/requirements.txt
index f5b6c76..bad41ef 100644
--- a/docker/requirements.txt
+++ b/docker/requirements.txt
@@ -1,6 +1,5 @@
-argparse
-flask
-pygments
-dnspython
-tzlocal
-sqlite-web
\ No newline at end of file
+Flask==2.1.2
+Pygments==2.12.0
+dnspython==2.2.1
+tzlocal==4.2
+sqlite-web==0.4.0
\ No newline at end of file
diff --git a/docker/requirements_minimal.txt b/docker/requirements_minimal.txt
index 1edfc1c..509c137 100644
--- a/docker/requirements_minimal.txt
+++ b/docker/requirements_minimal.txt
@@ -1,5 +1,4 @@
-argparse
-flask
-pygments
-dnspython
-tzlocal
\ No newline at end of file
+Flask==2.1.2
+Pygments==2.12.0
+dnspython==2.2.1
+tzlocal==4.2
\ No newline at end of file
diff --git a/docker/start.py b/docker/start.py
index 90de633..84463ba 100644
--- a/docker/start.py
+++ b/docker/start.py
@@ -21,10 +21,9 @@ argumentVariableMapping = {
 }
 
 sqliteWebPath = '/home/sqlite_web/sqlite_web.py'
-enableSQLITE = os.environ.get('SQLITE', 'false').lower() == 'true'
-enableSQLITE = os.getenv('TYPE') != 'MINIMAL'
+enableSQLITE = os.environ.get('SQLITE', 'false').lower() == 'true' and  os.environ.get('TYPE') != 'MINIMAL'
 dbPath = os.path.join(os.sep, 'home', 'py-kms', 'db', 'pykms_database.db')
-log_level_bootstrap = log_level = os.getenv('LOGLEVEL', 'INFO')
+log_level_bootstrap = log_level = os.environ.get('LOGLEVEL', 'INFO')
 if log_level_bootstrap == "MININFO":
   log_level_bootstrap = "INFO"
 log_file = os.environ.get('LOGFILE', 'STDOUT')
@@ -107,4 +106,5 @@ if (__name__ == "__main__"):
                                 datefmt='%a, %d %b %Y %H:%M:%S')
   streamhandler.setFormatter(formatter)
   loggersrv.addHandler(streamhandler)
+  loggersrv.debug("user id: %s" % os.getuid())
   start_kms()