Deploy and Host Adobe S3Mock Test Storage on Railway

S3-compatible test endpoints with durable local object fixtures.

Draft status: Configuration and upstream documentation reviewed. Container startup, Railway application workflows, restart behavior, backup restoration and costs remain unverified.

About Hosting

S3-compatible test endpoints with durable local object fixtures.

Service	Role	Persistent path
`app`	Private application or dependency	`/s3mockroot`
`s3mock`	Public owner gateway	`None`

Why Deploy

Run this application in your own Railway project, with explicit configuration and storage under your control.

Common Use Cases

S3-compatible test endpoints with durable local object fixtures.

Dependencies for Adobe S3Mock Test Storage

Deployment Dependencies

The application images are pinned by registry digest. Database services, when included, stay on the private network. One replica is supported for each volume-backed service.

First use

Open the s3mock service's HTTPS domain. Sign in to the owner gateway with username admin and its generated ACCESS_PASSWORD. Complete the application's own setup afterward.

API calls must also send X-Template-Key with that owner password. The gateway forwards native Bearer tokens, strips Basic Authorization, and limits requests to 32 MiB. Browser sessions receive a secure owner cookie. Native clients, webhooks and public sharing require specific compatibility checks before use. Gateway /healthz only checks the proxy, not application readiness.

Configure your test AWS SDK with path-style access and endpoint http://app.railway.internal:9090 inside the project. For the public HTTPS gateway add X-Template-Key through SDK request middleware. Use dummy AWS credentials; these are not a security boundary.

Scope and limitations

A development emulator, not production object storage. It does not implement AWS IAM authorization or the full S3 feature set.
The owner gateway limits public uploads to 32 MiB; private test traffic uses the application directly.
Only the HTTP listener is used internally; Railway terminates public TLS.

Acceptance checks before use

Upload, retrieve and delete a fixture using an S3 SDK in path-style mode.
Upload a second fixture, restart, and verify it remains.
Confirm generated credentials are distinct on a second fresh deployment.
Back up every listed persistent path and database, then restore into a separate test project.
Measure Railway usage with representative data and workload before estimating operating costs.

Backups and upgrades

Back up databases, file volumes, encryption keys and configuration together. Keep a copy outside the running project. Review upstream migration notes before changing a digest; rollback can require restoring a compatible database and files, not just selecting an older image.

Sources and selection evidence

Upstream documentation: Official image port 9090, v5 configuration names, path-style S3, /s3mockroot persistence and health endpoint.
Upstream project

Product and alias searches found no matching public Railway listing during this research. This is a bounded search result; private, unindexed or differently named listings may exist. It is not evidence of demand or revenue.

Upstream software retains its own license and edition restrictions. This deployment draft does not imply upstream endorsement.