ensure `readelf` is available

.github/workflows/linux_debug.yml

@@ -46,7 +46,7 @@ jobs:
         run:  sudo apt-get install ccache
 
       - name: Install post-link dependencies
-        run:  sudo apt-get install -y patchelf
+        run:  sudo apt-get install -y binutils patchelf
 
       - name: Prepare ccache timestamp
         id: ccache_cache_timestamp

.github/workflows/linux_release.yml

@@ -47,7 +47,7 @@ jobs:
         run:  sudo apt-get install ccache
 
       - name: Install post-link dependencies
-        run:  sudo apt-get install -y patchelf
+        run:  sudo apt-get install -y binutils patchelf
 
       - name: Prepare ccache timestamp
         id: ccache_cache_timestamp

deploy/docker/Dockerfile-build-linux

@@ -20,6 +20,7 @@ ENV PATH /usr/lib/ccache:$QT_DESKTOP/bin:$PATH
 
 RUN apt update && apt -y --quiet --no-install-recommends install \
 		apt-utils \
+		binutils \
 		build-essential \
 		ca-certificates \
 		ccache \