chore: improve package installation and add Python depend… (#42)

* chore(dockerfile): improve package installation and add Python dependencies

* chore(dockerfile): update package installation commands for consistency

* chore: update release version to dsh-v0.2.1-rc.5-r6 across documentation and configuration files

CHANGELOG.md

@@ -3,6 +3,40 @@
 All notable changes to this repository are documented here.
 Generated by git-cliff from Conventional Commits; do not edit this file by hand.
 
+## [Unreleased]
+
+### Added
+
+- **example:** Persist the agent workspace on the PVC via subPath (#34) (367294b)
+- **example:** Start DSH's folder picker on the persisted workspace (#36) (82ee0d0)
+
+### CI
+
+- **workflows:** Streamline CI and remove redundant builds (#31) (dcb5b43)
+
+### Documentation
+
+- Align readmes, docs and agent guidance with current behavior (#37) (24f23e0)
+
+### Fixed
+
+- **gateway:** Answer client-aborted requests with 499, not a traceback (#32) (cbcc56f)
+- Ship bubblewrap for DSH's command sandbox, keep agents usable without it (#35) (a09d4ac)
+- **ci:** Harden workflow token scope and download integrity (#39) (2f959e6)
+- **gateway:** Replace token cookies with revocable sessions and harden abuse controls (#40) (1a929e3)
+
+### Maintenance
+
+- **changelog:** Refresh for dsh-v0.2.1-rc.5 (#30) (b57916d)
+- Bump docker/login-action (#28) (8c34f43)
+- **deps:** Bump agent-sandbox to v1.0.9 (#38) (4c073ee)
+- **dockerfile:** Improve package installation and add Python dependencies (bd7c6f3)
+- **dockerfile:** Update package installation commands for consistency (0a3fe25)
+
+### Other
+
+- Add continue-on-error to CHANGELOG PR step (97c5632)
+
 ## [dsh-v0.2.1-rc.5] - 2026-10-30
 
 ### Added