Merge all GitHub Actions into single workflow with Docker support

Author: GeiserX

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    wget \
+    gnupg \
+    unzip \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Install the package
+RUN pip install --no-cache-dir -e .
+
+# Set entrypoint
+ENTRYPOINT ["website-diff"]