Try again 2-stage build

Containerfile.custom

-FROM docker.io/fedora
+FROM docker.io/fedora:40 as build
 
 RUN dnf install -y cmake g++ && \
     mkdir /tmp/pict
@@ -10,6 +10,10 @@ RUN cd /pict/ && \
     cmake -DCMAKE_BUILD_TYPE=Release -S . -B build && \
     cmake --build build
 
-WORKDIR /pict/build/cli/
 
-ENTRYPOINT ["pict"]
\ No newline at end of file
+
+FROM docker.io/fedora:40
+
+COPY --from=build /pict/build/cli/pict /usr/local/bin
+
+CMD /usr/local/bin/pict
\ No newline at end of file