Deprecate PIDLock usage and update Dockerfile to resolve warnings (#…

…179)

# Description
Deprecate `PIDLock` initialization
Resolve Dockerfile warnings

# Issues
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# Other Notes
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Dockerfile

@@ -1,11 +1,11 @@
-FROM python:3.10-slim as base
+FROM python:3.10-slim AS base
 
 LABEL vendor=neon.ai \
     ai.neon.name="neon-audio"
 
-ENV OVOS_CONFIG_BASE_FOLDER neon
-ENV OVOS_CONFIG_FILENAME neon.yaml
-ENV XDG_CONFIG_HOME /config
+ENV OVOS_CONFIG_BASE_FOLDER=neon
+ENV OVOS_CONFIG_FILENAME=neon.yaml
+ENV XDG_CONFIG_HOME=/config
 
 RUN  apt-get update && \
      apt-get install -y \
@@ -47,5 +47,5 @@ RUN neon-audio install-dependencies
 
 CMD ["/root/run.sh"]
 
-FROM base as default_model
+FROM base AS default_model
 RUN neon-audio init-plugin

neon_audio/__main__.py

@@ -34,7 +34,7 @@
 from ovos_utils import wait_for_exit_signal
 from ovos_utils.log import LOG
 from ovos_config.locale import setup_locale
-from ovos_utils.process_utils import reset_sigint_handler, PIDLock as Lock
+from ovos_utils.process_utils import reset_sigint_handler
 
 from neon_audio.service import NeonPlaybackService
 
@@ -56,7 +56,6 @@ def main(*args, **kwargs):
 
     reset_sigint_handler()
     check_for_signal("isSpeaking")
-    Lock("audio")
     setup_locale()
     try:
         service = NeonPlaybackService(*args, **kwargs)