no more podman dep

docker/Dockerfile.worker

@@ -58,13 +58,12 @@ make binaries
 EOT
 
 
-# Add a buildah build stage
+# buildah build stage
 FROM golang AS buildah
 
 WORKDIR /workspace
 RUN apt-get update && apt-get install -y \
     make \
-    bats \
     btrfs-progs \
     git \
     go-md2man \
@@ -78,7 +77,7 @@ RUN apt-get update && apt-get install -y \
     pkg-config
 
 RUN git clone https://github.com/containers/buildah.git . && \
-    CGO_ENABLED=0 make BUILDTAGS="containers_image_ostree_stub exclude_graphdriver_devicemapper exclude_graphdriver_btrfs containers_image_openpgp cni" && \
+    make BUILDTAGS="cni" && \
     make install
 
 # beta9 worker
@@ -116,7 +115,10 @@ RUN apt-get install -y --no-install-recommends nvidia-container-toolkit-base nvi
 
 RUN apt-get update && apt-get install -y fuse3 libfuse2 libfuse3-dev libfuse-dev bash-completion
 
-RUN apt-get install -y libbtrfs-dev libgpgme11-dev podman
+RUN apt-get install -y libbtrfs-dev libgpgme11-dev
+RUN mkdir -p /etc/containers/registries.conf.d
+RUN curl -L https://raw.githubusercontent.com/containers/shortnames/refs/heads/main/shortnames.conf \
+    -o /etc/containers/registries.conf.d/shortnames.conf
 
 # XXX: Remove once cedana starts shipping with a compatible binary
 RUN <<EOT
@@ -187,3 +189,6 @@ COPY --from=buildah /usr/local/bin/buildah /usr/local/bin/buildah
 
 VOLUME "/usr/lib/x86_64-linux-gnu"
 VOLUME "/usr/lib/aarch64-linux-gnu"
+
+ENV _BUILDAH_STARTED_IN_USERNS="" \
+    BUILDAH_ISOLATION=chroot