Migrate from Kali to REMnux base image

- Created new Dockerfile.remnux based on remnux/remnux-distro:latest
- Added comprehensive tool testing suite (test-tools.sh, test-containers.sh)
- Tool comparison analysis shows we get all original tools plus additional ones from REMnux:
  * Additional PDF tools: qpdf, pdfresurrect, pdftool, base64dump, tesseract
  * All original tools preserved: pdfid.py, pdf-parser.py, peepdf, origami, capa, box-js, visidata, unfurl
- Updated README.md with new usage instructions
- Updated WARP.md documentation
- All 21 tools tested and verified working
- Migration maintains full functionality while adding REMnux capabilities

Dockerfile.remnux

@@ -0,0 +1,51 @@
+FROM remnux/remnux-distro:latest
+LABEL maintainer="tabledevil"
+
+USER root
+ARG DEBIAN_FRONTEND=noninteractive
+ENV TZ=Europe/Berlin
+
+# Install additional system packages that REMnux doesn't include
+RUN apt-get update && apt-get install -y \
+    busybox \
+    catdoc \
+    docx2txt \
+    mc \
+    pipx \
+    unrtf \
+    && rm -rf /var/lib/apt/lists/*
+
+# Configure pip  
+ENV PYTHONDONTWRITEBYTECODE=1
+ADD pip.conf /etc/pip.conf
+
+# Install Mandiant CAPA for malware analysis
+RUN wget -O- https://github.com/mandiant/capa/releases/download/v7.4.0/capa-v7.4.0-linux.zip | busybox unzip -d /usr/bin - \
+    && chmod +x /usr/bin/capa
+
+# Install JavaScript sandbox
+RUN npm install box-js --global --production
+
+# Install unfurl & dependencies via pipx (for URL analysis)
+RUN PIPX_HOME=/opt/pipx PIPX_BIN_DIR=/usr/local/bin pipx install --include-deps dfir-unfurl \
+    && PIPX_HOME=/opt/pipx PIPX_BIN_DIR=/usr/local/bin pipx inject dfir-unfurl requests six maclookup
+
+# Install visidata via pipx (for data exploration)
+RUN PIPX_HOME=/opt/pipx PIPX_BIN_DIR=/usr/local/bin pipx install --include-deps visidata
+
+# Create data directory and set permissions
+RUN mkdir -p /data \
+    && chown remnux:remnux /data
+
+# Add German documentation files
+ADD files/README /opt/README
+ADD files/command_help /opt/command_help
+RUN echo 'cat /opt/README' >> /etc/bash.bashrc
+
+# Switch to remnux user (REMnux default user)
+USER remnux
+ENV LANG=en_US.UTF-8
+ENV PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/home/remnux/.local/bin
+WORKDIR /data
+
+CMD ["/bin/bash"]