Changed dockerfile to recompile ODM core to support more architectures

Dockerfile

@@ -8,6 +8,13 @@ RUN curl --silent --location https://deb.nodesource.com/setup_6.x | sudo bash -
 RUN apt-get install -y nodejs python-gdal
 RUN npm install -g nodemon
 
+# Recompile OpenDroneMap. This is necessary as the target architecture might be different than the one from which the base image was created
+WORKDIR "/code"
+RUN rm -fr build && rm -fr SuperBuild/build \
+    && cd SuperBuild && mkdir build && cd build && cmake .. && make -j$(nproc) \
+    && cd ../.. && mkdir build && cd build && cmake .. && make -j$(nproc)
+
+
 RUN mkdir /var/www
 
 WORKDIR "/var/www"