tmdinosaurcenter/kiosk-guestbook
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Making the header/title are a variable

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Refactor Dockerfile and entrypoint script; add index.html.template and update example.env
This commit is contained in:
Steve Dogiakos 2025-04-04 14:46:29 -06:00
parent 9f462c4c0a
commit e25cdca466
4 changed files with 23 additions and 7 deletions
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15
Dockerfile
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@ -4,18 +4,25 @@ FROM python:3.9-slim
# Set the working directory
WORKDIR /app
# Install dependencies
# Install system dependencies (including gettext for envsubst)
RUN apt-get update && apt-get install -y gettext && rm -rf /var/lib/apt/lists/*
# Install Python dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
# Copy the application code
# Copy the application code and template files
COPY . .
# Copy the entrypoint script into the container and make it executable
COPY entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh
# Set environment variables (can be overridden by .env)
ENV FLASK_ENV=production
# Expose the port (Gunicorn will run on 8000)
EXPOSE 8000
# Run the app with Gunicorn; use 3 workers (can be tuned via .env)
CMD ["gunicorn", "--bind", "0.0.0.0:8000", "app:app", "--workers", "3"]
# Use the entrypoint script as the container's command
CMD ["/entrypoint.sh"]

1
example.env
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@ -8,3 +8,4 @@ DATABASE_PATH=/data/scripts/guestbook.db
GUNICORN_WORKERS=3
PID=1000
GID=1000
SITE_TITLE="The Montana Dinosaur Center Visitor Log"

7
scripts/entrypoint.sh Normal file
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@ -0,0 +1,7 @@
#!/bin/sh
# Process index.html.template to create index.html
# Adjust the path if your template is located somewhere else
envsubst < /templates/index.html.template > /templates/index.html
# Start Gunicorn; using an environment variable for workers (default is 3)
exec gunicorn --bind 0.0.0.0:8000 app:app --workers ${WORKERS:-3}

7
templates/index.html → templates/index.html.template
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@ -4,7 +4,8 @@
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>The Montana Dinosaur Center Visitor Log</title>
<title>${SITE_TITLE}</title>
<!-- Bootstrap CSS -->
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" />
<style>
@ -40,8 +41,8 @@
<body>
<div class="container mt-5 mb-5">
<header class="d-flex align-items-center mb-4">
<img src="static/images/logo.png" alt="Museum Logo" class="me-3" style="height: 50px;" />
<h1 class="h3 mb-0">The Montana Dinosaur Center Visitor Log</h1>
<img src="static/images/logo.png" alt="Logo" class="me-3" style="height: 50px;" />
<h1 class="h3 mb-0">${SITE_TITLE}</h1>
</header>
<!-- Brief instructions for the form -->