Feature/remove bollard (#2396)

* wip

* remove bollard, add podman feature

* fix error message parsing

* fix subcommand

* fix typo

* use com.docker.network.bridge.name for podman

* fix parse error

* handle podman network interface nuance

* add libyajl2

* use podman repos

* manually add criu

* do not manually require criu

* remove docker images during cleanup stage

* force removal

* increase img size

* Update startos-iso.yaml

* don't remove docker

backend/src/s9pk/specv2.md

@@ -0,0 +1,28 @@
+## Header
+
+### Magic
+
+2B: `0x3b3b`
+
+### Version
+
+varint: `0x02`
+
+### Pubkey
+
+32B: ed25519 pubkey
+
+### TOC
+
+- number of sections (varint)
+- FOREACH section
+  - sig (32B: ed25519 signature of BLAKE-3 of rest of section)
+  - name (varstring)
+  - TYPE (varint)
+    - TYPE=FILE (`0x01`)
+      - mime (varstring)
+      - pos (32B: u64 BE)
+      - len (32B: u64 BE)
+      - hash (32B: BLAKE-3 of file contents)
+    - TYPE=TOC (`0x02`)
+      - recursively defined