Changelog Interviews Setting Docker Hardened Images free
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Feb 4, 2026 
Tushar Jain, EVP of Engineering at Docker and lead of the Hardened Images initiative, talks about making minimal, production-ready hardened base images and why Docker focused on supply-chain security. He covers SBOMs, reproducible builds, provenance and VEX transparency. He also discusses migration trade-offs, ecosystem integrations, and adapting runtimes for secure AI and agent workflows.
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Free Tier As Adoption Funnel
- Making hardened images free broadens adoption and becomes a funnel to paid enterprise guarantees like SLAs and FIPS.
- Free access raises the overall security baseline while paid tiers address compliance and long-term support needs.
Rapid Early Adoption
- After launch Docker saw immediate interest from open source projects and enterprises alike.
- Adoption rose further when Docker expanded free access in December, lowering the barrier to try hardened images.
Registry Position Implies Responsibility
- Docker recognized its registry role imposes responsibility to secure the supply chain end-to-end.
- The project required company-wide alignment, deep technical quality and careful product planning before public launch.