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fix: Docker container restart without recreating (#324)

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uv venv fails with 'A virtual environment already exists' when the
container is stopped and started (not removed). The venv persists in
the container filesystem between stop/start cycles.

Fix: skip venv creation and dependency installation if they already
exist from a previous run. Uses two checks:
- /app/venv/bin/python3 exists → skip venv creation
- /app/venv/.deps_installed marker → skip pip install

This also makes restarts much faster since deps don't need to be
reinstalled every time the container starts.

Fixes #324

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Nathan Esquenazi
2026-04-12 13:27:21 -07:00
parent 2562567730
commit 26c24867e6
1 changed files with 17 additions and 7 deletions
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24
docker_init.bash
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@@ -204,7 +204,12 @@ sudo mkdir -p ${UV_CACHE_DIR} || error_exit "Failed to create /uv_cache director
sudo chown hermeswebui:hermeswebui ${UV_CACHE_DIR} || error_exit "Failed to set owner of ${UV_CACHE_DIR} to hermeswebui user"
cd /app
uv venv venv
if [ -f /app/venv/bin/python3 ]; then
echo ""; echo "== Existing virtual environment found — reusing (fast restart)"
else
echo ""; echo "== Creating new virtual environment"
uv venv venv
fi
export VIRTUAL_ENV=/app/venv
test -d /app/venv
test -f /app/venv/bin/activate
@@ -213,13 +218,18 @@ echo "";echo "== Activating hermes webui's virtual environment"
source /app/venv/bin/activate || error_exit "Failed to activate hermeswebui virtual environment"
test -x /app/venv/bin/python3
echo ""; echo "== Installing hermes-webui dependencies"
uv pip install -r requirements.txt --trusted-host pypi.org --trusted-host files.pythonhosted.org
uv pip install -U pip setuptools --trusted-host pypi.org --trusted-host files.pythonhosted.org
test -x /app/venv/bin/pip
if [ -f /app/venv/.deps_installed ]; then
echo ""; echo "== Dependencies already installed — skipping (fast restart)"
else
echo ""; echo "== Installing hermes-webui dependencies"
uv pip install -r requirements.txt --trusted-host pypi.org --trusted-host files.pythonhosted.org
uv pip install -U pip setuptools --trusted-host pypi.org --trusted-host files.pythonhosted.org
test -x /app/venv/bin/pip
echo ""; echo "== Adding hermes-agent's pyproject.toml base dependencies to the virtual environment"
uv pip install /home/hermeswebui/.hermes/hermes-agent --trusted-host pypi.org --trusted-host files.pythonhosted.org || error_exit "Failed to install hermes-agent's requirements"
echo ""; echo "== Adding hermes-agent's pyproject.toml base dependencies to the virtual environment"
uv pip install /home/hermeswebui/.hermes/hermes-agent --trusted-host pypi.org --trusted-host files.pythonhosted.org || error_exit "Failed to install hermes-agent's requirements"
touch /app/venv/.deps_installed
fi
echo ""; echo "== Running hermes-webui"
cd /app; python server.py || error_exit "hermes-webui failed or exited with an error"