:sparkles: Add sample script for demo server

[codecov[bot]]

Codecov Report

Attention: 134 lines in your changes are missing coverage. Please review.

Comparison is base (b51d352) 48.77% compared to head (301c88a) 47.95%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #206 +/- ## ========================================== - Coverage 48.77% 47.95% -0.82% ========================================== Files 118 118 Lines 6700 6810 +110 ========================================== - Hits 3268 3266 -2 - Misses 3152 3261 +109 - Partials 280 283 +3 ``` | [Flag](https://app.codecov.io/gh/go-sigma/sigma/pull/206/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma) | Coverage Δ | | |---|---|---| | [unit-test-mysql](https://app.codecov.io/gh/go-sigma/sigma/pull/206/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma) | `47.95% <2.18%> (-0.82%)` | :arrow_down: | | [unit-test-postgresql](https://app.codecov.io/gh/go-sigma/sigma/pull/206/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma) | `47.95% <2.18%> (-0.82%)` | :arrow_down: | | [unit-test-sqlite3](https://app.codecov.io/gh/go-sigma/sigma/pull/206/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma) | `47.95% <2.18%> (-0.82%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files](https://app.codecov.io/gh/go-sigma/sigma/pull/206?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma) | Coverage Δ | | |---|---|---| | [pkg/configs/configuration.go](https://app.codecov.io/gh/go-sigma/sigma/pull/206?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma#diff-cGtnL2NvbmZpZ3MvY29uZmlndXJhdGlvbi5nbw==) | `0.00% <ø> (ø)` | | | [pkg/storage/filesystem/filesystem.go](https://app.codecov.io/gh/go-sigma/sigma/pull/206?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma#diff-cGtnL3N0b3JhZ2UvZmlsZXN5c3RlbS9maWxlc3lzdGVtLmdv) | `42.95% <100.00%> (-1.35%)` | :arrow_down: | | [pkg/storage/storage.go](https://app.codecov.io/gh/go-sigma/sigma/pull/206?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma#diff-cGtnL3N0b3JhZ2Uvc3RvcmFnZS5nbw==) | `85.18% <100.00%> (ø)` | | | [pkg/handlers/distribution/upload/upload\_put.go](https://app.codecov.io/gh/go-sigma/sigma/pull/206?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma#diff-cGtnL2hhbmRsZXJzL2Rpc3RyaWJ1dGlvbi91cGxvYWQvdXBsb2FkX3B1dC5nbw==) | `0.00% <0.00%> (ø)` | | | [pkg/handlers/repositories/repositories\_post.go](https://app.codecov.io/gh/go-sigma/sigma/pull/206?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma#diff-cGtnL2hhbmRsZXJzL3JlcG9zaXRvcmllcy9yZXBvc2l0b3JpZXNfcG9zdC5nbw==) | `0.00% <0.00%> (ø)` | | | [pkg/handlers/namespaces/namespaces\_post.go](https://app.codecov.io/gh/go-sigma/sigma/pull/206?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma#diff-cGtnL2hhbmRsZXJzL25hbWVzcGFjZXMvbmFtZXNwYWNlc19wb3N0Lmdv) | `81.33% <0.00%> (-7.08%)` | :arrow_down: | | [pkg/dal/dao/artifact.go](https://app.codecov.io/gh/go-sigma/sigma/pull/206?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma#diff-cGtnL2RhbC9kYW8vYXJ0aWZhY3QuZ28=) | `57.73% <0.00%> (-3.81%)` | :arrow_down: | | [pkg/xerrors/distribution.go](https://app.codecov.io/gh/go-sigma/sigma/pull/206?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma#diff-cGtnL3hlcnJvcnMvZGlzdHJpYnV0aW9uLmdv) | `26.38% <0.00%> (-73.62%)` | :arrow_down: | | [pkg/handlers/distribution/manifest/manifest\_put.go](https://app.codecov.io/gh/go-sigma/sigma/pull/206?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma#diff-cGtnL2hhbmRsZXJzL2Rpc3RyaWJ1dGlvbi9tYW5pZmVzdC9tYW5pZmVzdF9wdXQuZ28=) | `35.17% <1.72%> (-4.53%)` | :arrow_down: |

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