add image for building appimages

appimage/Dockerfile

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+FROM fedora:latest
+
+ENV RUST_VERSION=1.58.1
+RUN dnf install gtk4-devel gcc libadwaita-devel -y
+
+RUN curl https://sh.rustup.rs -sSf | sh -s -- -y
+RUN . ~/.cargo/env
+RUN ls $HOME/.cargo/env
+ENV PATH=/root/.cargo/bin:$PATH
+RUN rustup install ${RUST_VERSION}
+
+
+ENV APPIMAGE_VERSION=13
+ENV APPIMAGE_EXTRACT_AND_RUN=1
+
+RUN cargo install cargo-appimage
+
+RUN dnf install wget -y
+
+RUN wget https://github.com/AppImage/AppImageKit/releases/download/$APPIMAGE_VERSION/appimagetool-x86_64.AppImage
+RUN chmod +x appimagetool-x86_64.AppImage
+RUN ./appimagetool-x86_64.AppImage --appimage-extract
+RUN ls
+RUN ln -nfs /squashfs-root/usr/bin/appimagetool /usr/bin/appimagetool
+
+RUN dnf install file desktop-file-utils appstream -y
+
+WORKDIR /mnt
+
+CMD ["/bin/bash"]

appimage/docker-compose.yml

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+version: "3"
+services:
+  rust-gtk-appimage:
+    build: .
+    volumes:
+      - ../adwaita-demo:/mnt:z
+    command: /bin/bash -c "cargo appimage"