Technology · head to head
Docker vs Postgres
Docker
Technology
Accelerate how you build, share, and run applications
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Docker shared kernel creates security vulnerabilities when containers share the same OS kernel that can bypass container isolation; Postgres each major version is supported for only 5 years after its initial release, after which it is end-of-life
- They diverge on capability: Docker covers Container runtime, Postgres covers ACID compliance.
- Prices and features above were last checked on 30 August 2026.
Where they differ
Only the attributes on which Docker and Postgres actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Technology).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Docker
- Container runtime
- Docker Desktop
- Docker Hub
- Docker Compose
- Container images
- Dockerfile
- Docker Swarm
- BuildKit
Only in Postgres
- ACID compliance
- Complex queries
- Foreign keys
- Triggers
- Views
- Stored procedures
- JSON/JSONB support
- Full-text search
What people use each for
The jobs each tool is most often brought in to do.
Docker
- Application containerizationnot Postgres
- Microservicesnot Postgres
- CI/CD pipelinesnot Postgres
- Development environmentsnot Postgres
- Cloud migrationnot Postgres
Postgres
- Running a general purpose relational database for applicationsnot Docker
- Self-hosting an open source SQL database with no licence feenot Docker
- Workloads needing extensions, JSON and full text search in one enginenot Docker
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Docker
- Shared kernel creates security vulnerabilities when containers share the same OS kernel that can bypass container isolation
- Daemon socket exposure grants full root access to the host if compromised
- Requires careful secrets management - credentials embedded in images or environment variables are easily harvested by attackers
- Resource management complexity - misbehaving or compromised containers can consume all resources causing denial of service
- Orchestration complexity - Docker Swarm is less capable than Kubernetes, requiring external tools for production deployments
Postgres
- Each major version is supported for only 5 years after its initial release, after which it is end-of-life
- Major version upgrades break on-disk compatibility and require a full dump and reload or the pg_upgrade tool
- New major versions ship about once a year, so staying supported means a disruptive upgrade cycle
- Minor releases contain only frequently-encountered bug fixes, low-risk fixes, security issues and data corruption fixes, so feature gaps are not addressed within a major version
- There is no vendor SLA; commercial support must be bought separately from third party professional services listed by the project
Pricing, plan by plan
Docker
FreeNo published plan breakdown. See the Docker review.
Postgres
Free- Community EditionFree
- Full database features
- No limitations
- Community support
Which should you pick?
Choose Docker if
- You need container runtime.
- You want to start without paying.
- You work on Linux, macOS, Windows.
- You also want docker desktop.
Choose Postgres if
- You need acid compliance.
- You want to start without paying.
- You work on Linux, Windows, Macos, Docker.
- You also want complex queries.
Questions people ask
- Is Docker or Postgres better?
- Neither clearly leads. Docker starts at Free and Postgres at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Docker or Postgres?
- Docker starts at Free and Postgres at Free.
- Does Docker or Postgres run on more platforms?
- Docker runs on Linux, macOS, Windows. Postgres runs on Linux, Windows, Macos, Docker.
- Can I use Docker for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Docker best used for?
- Docker is most often used for application containerization, microservices, ci/cd pipelines, development environments. Of those, application containerization and microservices are not what Postgres is typically brought in for.
- What can Docker do that Postgres cannot?
- Docker covers Container runtime, Docker Desktop, Docker Hub, Docker Compose. Postgres covers ACID compliance, Complex queries, Foreign keys, Triggers.
Answered from the vendors’ own pages
Docker: What is Docker pricing?
Docker offers a freemium model with Docker Personal free, Docker Pro at $11/user/month, Docker Team at $16/user/month, and Docker Business at $24/user/month. Each tier includes Docker Desktop, Docker Hub, and Docker Scout with different usage limits.
SourcePostgres: How much does PostgreSQL cost to use?
PostgreSQL is completely free to download, install, and use. No licensing fees, subscription costs, or per-seat charges apply. The database is open source under the PostgreSQL License. Source: https://www.postgresql.org
SourceDocker: Can I use Docker in production?
Yes. Docker is used extensively in production environments. However, for container orchestration at scale, Kubernetes is typically paired with Docker to automate deployment, scaling, and management across clusters.
SourcePostgres: Are there commercial PostgreSQL support options available?
Official PostgreSQL (the project) is free. Commercial PostgreSQL services such as hosting, professional support, training, and managed database services are offered by third-party vendors, not the PostgreSQL project itself. Source: https://www.postgresql.org
SourceDocker: What are the main security concerns with Docker?
Key security risks include container breakout vulnerabilities through shared kernel exploits, daemon socket exposure that grants root access if compromised, weak isolation between containers, and credential leakage if secrets are embedded in images.
SourcePostgres: Do I need a license to use PostgreSQL commercially?
No. PostgreSQL is open source under the PostgreSQL License, which permits free commercial use without royalties, licensing fees, or support obligations. Source: https://www.postgresql.org
SourceDocker: Does Docker integrate with CI/CD systems?
Yes. Docker integrates with Jenkins, GitHub, and other CI/CD systems. The typical workflow involves GitHub repositories triggering automated builds in Jenkins, which prepare Dockerfiles and push images to Docker Hub for deployment.
SourceRelated pages
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