Add Nextflow pipeline for PROPKA with Docker configuration

Dockerfile

@@ -0,0 +1,23 @@
+FROM python:3.10-slim-bullseye
+
+# Update and install basic utilities and dependencies
+RUN apt-get update -y \
+    && apt-get -y upgrade --fix-missing \
+    && apt-get -y install git procps coreutils \
+                          build-essential \
+                          gcc \
+                          python3-dev \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /workspace
+
+# Install PROPKA with dependencies 
+RUN pip install --no-cache-dir numpy pytest \
+    && pip install --no-cache-dir propka
+
+# Make propka3 available in PATH (should already be in path from pip install)
+ENV PATH="/usr/local/bin:${PATH}"
+
+# Test that the installation worked
+RUN propka3 --help