migration: prefer ./external for RTI/ArcGIS; detect RTI arch in FindRTI; install/unpack ArcGIS into ./external

app/Dockerfile

@@ -10,7 +10,8 @@ ENV DEBIAN_FRONTEND=noninteractive \
     QT_BASE_DIR=/opt/Qt \
     QT_ROOT=/opt/Qt/6.8.3/gcc_64 \
     Qt6_ROOT=/opt/Qt/6.8.3/gcc_64 \
-    CMAKE_PREFIX_PATH=/usr/local:/opt/Qt/6.8.3/gcc_64 \
+    EXTERNAL_DIR=/repo/external \
+    CMAKE_PREFIX_PATH=/usr/local:/opt/Qt/6.8.3/gcc_64:/repo/external \
     PATH=/opt/Qt/6.8.3/gcc_64/bin:$PATH
 
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
@@ -42,6 +43,8 @@ RUN apt-get update \
         libbz2-dev \
         libpoppler-dev \
         libpoppler-qt6-dev \
+        libboost-dev \
+        unzip \
         python3 \
         python3-venv \
         python3-pip \
@@ -85,8 +88,8 @@ RUN set -eux; \
     /app/build_kdreports.sh || true; \
     # If libgtest-dev provided sources, build+install them via script
     /app/build_gtest.sh || true; \
-    # geographiclib already installed via apt; RTI (Proprietary) cannot be installed automatically
-    echo "Note: RTI Connext (RTI) is proprietary and must be installed manually into /opt/RTI if required."
+    # geographiclib already installed via apt; RTI and ArcGIS are proprietary and installed externally
+    echo "Note: RTI Connext and ArcGIS Maps SDK are expected to be provided under /repo/external (e.g. /repo/external/rti_connext_dds-7.7.0 and /repo/external/ArcGIS)."
 
 # Add RPM/rpmbuild tools so make_rpm.py can run inside the image when requested
 RUN set -eux; \