devcontainer: install additional packages

Install more more tools and utilities that help with development
and testing of osbuild inside the dev container.

.devcontainer/Dockerfile

@@ -1,20 +1,34 @@
-FROM fedora
+FROM fedora:latest
 RUN dnf install -y \
+    findutils \
     fish \
+    fpaste \
     git \
+    hostname \
     jq \
+    libguestfs-tools libguestfs \
+    libosinfo \
     make \
     qemu-img \
+    qemu-system-x86 \
     osbuild \
     osbuild-ostree \
+    podman \
     pylint \
     python3-autopep8 \
     python3-devel \
     python3-docutils \
+    python3-enchant \
     python3-iniparse \
+    python3-mako \
     python3-jsonschema \
     python3-pip \
+    python3-pycodestyle \
     python3-pylint \
     python3-pytest \
     rpm-build \
-    selinux-policy-devel
+    rpmlint \
+    selinux-policy-devel \
+    skopeo \
+    the_silver_searcher \
+    tree