docs: adding docker-compose example and update readme.md #74
Conversation
|
|
WalkthroughAdds a Docker Compose setup (postgres, migrations, app), an env template and docker example docs, updates .gitignore to ignore the Postgres data volume, and adjusts Dockerfile.db-based-migrations WORKDIR and formatting. Changes
Sequence Diagram(s)sequenceDiagram
rect rgb(245,250,255)
participant Dev as Developer
participant Compose as "Docker Compose"
participant Postgres as Postgres
participant Migs as "hub-migrations"
participant App as "hub-database"
end
Dev->>Compose: docker compose --env-file .env up
Compose->>Postgres: start postgres container
Postgres-->>Compose: healthcheck OK
Compose->>Migs: start migrations (depends_on: postgres healthy)
Migs->>Postgres: connect & run migrations
Migs-->>Compose: exit success (complete)
Compose->>App: start app (depends_on: migrations complete)
App->>Postgres: connect via DATABASE_URL
App-->>Dev: services exposed (ports 3000/8080)
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~20–30 minutes
Poem
Pre-merge checks and finishing touches✅ Passed checks (3 passed)
✨ Finishing touches🧪 Generate unit tests (beta)
📜 Recent review detailsConfiguration used: CodeRabbit UI Review profile: CHILL Plan: Pro Disabled knowledge base sources:
📒 Files selected for processing (1)
🔇 Additional comments (3)
Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out. Comment |
![ellipsis-dev[bot]](https://avatars.githubusercontent.com/in/64358?s=60&v=4){kind=small}
There was a problem hiding this comment.
Important
Looks good to me! 👍
Reviewed everything up to 4bfd4c5 in 2 minutes and 21 seconds. Click for details.
- Reviewed
258lines of code in5files - Skipped
1files when reviewing. - Skipped posting
7draft comments. View those below. - Modify your settings and rules to customize what types of comments Ellipsis leaves. And don't forget to react with 👍 or 👎 to teach Ellipsis.
1. Dockerfile.db-based-migrations:21
- Draft comment:
WORKDIR changed from '/migrations' to '/' so that the 'migrations' folder is found as './migrations'. Confirm this is intentional and that sqlx will locate the migrations correctly. - Reason this comment was not posted:
Comment looked like it was already resolved.
2. README.md:270
- Draft comment:
Docker Compose example link added is useful. Optionally, consider using a fenced code block for commands to enhance readability. - Reason this comment was not posted:
Confidence changes required:33%<= threshold50%None
3. example/docker/README.md:6
- Draft comment:
Consider using fenced code blocks for run/stop commands for improved clarity instead of inline backticks. - Reason this comment was not posted:
Confidence changes required:50%<= threshold50%None
4. example/docker/compose.yaml:1
- Draft comment:
Add a 'version: "3.8"' key at the top of the Compose file to explicitly define the file format and ensure dependency conditions work as expected. - Reason this comment was not posted:
Decided after close inspection that this draft comment was likely wrong and/or not actionable: usefulness confidence = 10% vs. threshold = 50% The comment is suggesting adding a version key, which is actually outdated advice. Docker Compose v2 (which is now the standard) has deprecated the version key and it's no longer needed. The Compose Specification documentation explicitly states that the version key is informational only and should be omitted. The features being used (depends_on conditions, healthchecks) work fine without a version key in modern Docker Compose. This comment appears to be based on older Docker Compose practices and is not necessary or even recommended anymore. The file as written is correct for modern Docker Compose usage. I might be wrong about the version being deprecated - perhaps there are still edge cases or older Docker Compose installations where this matters. The comment might be trying to ensure compatibility with older versions of Docker Compose that users might have installed. While there might be some users with older Docker Compose versions, the modern best practice is to omit the version key entirely. Docker's official documentation now recommends not including it. If the project needed to support legacy versions, that would be a broader architectural decision, not something to address in a PR comment. The file as written follows current best practices. This comment should be deleted. It suggests adding a version key which is outdated advice - modern Docker Compose has deprecated this field and recommends omitting it. The file as written follows current best practices and the features used work correctly without a version key.
5. example/docker/compose.yaml:28
- Draft comment:
Pin the PostgreSQL image to a specific version instead of using 'latest' to ensure reproducible builds. - Reason this comment was not posted:
Decided after close inspection that this draft comment was likely wrong and/or not actionable: usefulness confidence = 30% vs. threshold = 50% This comment is about a change (new line added), and it provides specific, actionable advice with a concrete suggestion. However, I need to consider the rules: the comment is essentially a code quality/best practice suggestion. The rules say "Comments that suggest code quality refactors are good! But only if they are actionable and clear." This is actionable and clear. But I also need to consider: is this an "obvious or unimportant" comment? Using 'latest' in examples is common, and this is in an 'example/docker' directory, suggesting it's example code. For example code, using 'latest' might be intentional to keep it simple. The comment doesn't account for the context that this is example code. This is in an example directory (example/docker/compose.yaml), which suggests it's meant for demonstration purposes. For example code, using 'latest' might be intentional to keep examples simple and up-to-date. The comment doesn't consider this context and may be applying production best practices to example code inappropriately. While the critique about example code is valid, pinning versions is still a best practice even in examples because it ensures the example will work consistently for anyone trying it. However, the decision of whether to use 'latest' in examples is a subjective choice, and without clear evidence that using 'latest' is wrong here, I should err on the side of deleting the comment. The comment provides actionable advice but applies production best practices to example code where using 'latest' may be intentional. Since this is subjective and the context (example directory) suggests 'latest' might be appropriate, I should delete this comment.
6. example/docker/compose.yaml:45
- Draft comment:
Consider removing 'tty: true' and 'stdin_open: true' from the PostgreSQL service unless interactive debugging is needed. - Reason this comment was not posted:
Decided after close inspection that this draft comment was likely wrong and/or not actionable: usefulness confidence = 20% vs. threshold = 50% This comment is suggesting a potential optimization or cleanup, but it's phrased conditionally ("unless interactive debugging is needed"). The comment doesn't identify a bug or clear problem - it's more of a "consider this" suggestion. According to the rules, speculative comments like "If X, then Y is an issue" should be removed, and comments should only be made if there's clearly a code change required. This seems like optional advice rather than identifying a definite issue. The use of "Consider" also makes it sound like a suggestion rather than pointing out a clear problem. For a PostgreSQL container in a docker-compose setup, having tty and stdin_open might be intentional for various reasons, and without knowing the specific use case, this is speculative. The comment could be valid if these settings are genuinely unnecessary and add overhead or confusion. In many production-like setups, tty and stdin_open are indeed not needed for database containers. This might be legitimate code quality advice. While the settings might be unnecessary in some contexts, the comment uses "Consider" and includes a conditional clause "unless interactive debugging is needed", making it speculative rather than definitive. The rules explicitly state not to make speculative comments and only comment if there's clearly a code change required. This is optional advice, not a clear issue. This comment should be deleted because it's speculative and optional advice rather than identifying a clear issue. The conditional phrasing ("unless...") and the word "Consider" indicate this is not a definite problem requiring a code change.
7. Dockerfile.db-based-migrations:24
- Draft comment:
There is extraneous trailing whitespace at the end of the ENTRYPOINT command line. Please remove the trailing space to maintain consistency. - Reason this comment was not posted:
Decided after close inspection that this draft comment was likely wrong and/or not actionable: usefulness confidence = 0% vs. threshold = 50% The comment is about trailing whitespace on the ENTRYPOINT line. Looking at the diff carefully, the ENTRYPOINT line appears in the diff context but the trailing space was already there before this PR - it's not something introduced by this PR. The actual changes in this PR are: 1) indentation fixes for the RUN command, 2) changing WORKDIR from /migrations to /, and 3) adding a newline at the end of the file. The trailing whitespace on the ENTRYPOINT line is pre-existing, not introduced by this PR. According to the rules, I should only keep comments about changes made by the diff, not about pre-existing issues in unchanged code. However, the diff does show the ENTRYPOINT line in the context, and technically the file was modified. Could the tool have detected that this line needs fixing as part of general cleanup? But the rules are clear: comments should be about changes made by the diff, not pre-existing issues. Even if the file was touched, the ENTRYPOINT line itself wasn't changed by this PR - the trailing space was already there. The comment is about pre-existing code, not about a change introduced in this diff. This violates the rule that comments should be about changes made by the diff. This comment should be deleted because it's about a pre-existing issue (trailing whitespace) that was not introduced or modified by this PR. The ENTRYPOINT line appears in the diff context but was not actually changed.
Workflow ID: wflow_nIoAQZILLqGXcFBW
You can customize 
![coderabbitai[bot]](https://avatars.githubusercontent.com/in/347564?s=60&v=4){kind=small}
There was a problem hiding this comment.
Actionable comments posted: 1
🧹 Nitpick comments (6)
example/docker/env.template (1)
1-5: Add guidance for customizing template values.This template includes hardcoded credentials (POSTGRES_PASSWORD, DATABASE_URL). Consider adding a comment or updating the example/docker/README.md to emphasize that users must customize these values for their environment.
Add a header comment to the template file:
+# Copy this file to .env and customize the values below for your environment +# DO NOT commit the .env file to version control + POSTGRES_DB=hub POSTGRES_USER=hub POSTGRES_PASSWORD=password PGDATA=/var/lib/postgresql/data/pgdata DATABASE_URL=postgresql://hub:password@postgres:5432/hubAdditionally, update example/docker/README.md to document the setup process:
# How to run using docker compose + +## Setup + +1. Copy `env.template` to `.env` +2. Customize the credentials and connection strings in `.env` +3. Run with the env file: ## Daemon modeREADME.md (2)
270-270: Clarify the link to Docker Compose example.The link at line 270 points to
./example/dockerdirectory. For better UX, consider linking directly to the README file within that directory.-[docker compose example](./example/docker) +[docker compose example](./example/docker/README.md)
272-301: Pin Postgres version in README example.The example YAML uses
postgres:latest, which is undesirable for reproducibility. Update the example to use a pinned version matching the actual compose.yaml.postgres: - image: postgres:15 + image: postgres:15Note: Verify that the pinned version in the README matches the version specified in
example/docker/compose.yaml.example/docker/README.md (1)
1-14: Expand documentation with setup prerequisites and explanations.The file is minimal and lacks critical setup information. Users need guidance on:
- Building the
traceloop/hub-migrationsDocker image- Customizing the env.template before running
- What each mode (daemon vs. simple) means and when to use them
- How to verify services are running
# How to run using docker compose +## Prerequisites + +Before running the Docker Compose setup, ensure: +- Docker and Docker Compose are installed +- The Docker images are built: + ```bash + docker build -f Dockerfile.db-based-migrations -t traceloop/hub-migrations . + docker build -t traceloop/hub . + ``` + +## Setup + +1. Copy `env.template` to `.env` in this directory +2. Customize the credentials and connection strings in `.env` to match your environment +3. Verify services are healthy: + ```bash + docker compose --env-file .env logs + ``` + ## Daemon mode +Run in the background: + run: `docker compose --env-file env.template up -d` stop: `docker compose --env-file env.template down` ## Simple mode +Run in the foreground (useful for debugging and viewing logs): + run: `docker compose --env-file env.template up` + +After services start, verify they're healthy: +- Hub Gateway: http://localhost:3000/health +- Hub Management API: http://localhost:8080/health +- PostgreSQL: `docker compose --env-file env.template exec postgres pg_isready -U hub`example/docker/compose.yaml (2)
45-46: Remove unnecessary interactive terminal settings from postgres service.The
tty: trueandstdin_open: truesettings are intended for interactive containers. The postgres service runs in the background and does not need these settings.restart: unless-stopped - tty: true - stdin_open: true
1-50: Add comments explaining service orchestration and design decisions.While the compose configuration is functionally correct, it would benefit from inline documentation explaining:
- Why
hub-migrationsmust complete beforehub-databasestarts- Why
postgreshealthcheck is used as a dependency condition- Which ports map to which services and their purposes
+# Docker Compose configuration for local development with PostgreSQL +# Services: +# - postgres: PostgreSQL database with health checks +# - hub-migrations: Runs database migrations before starting the application +# - hub-database: Main application in database mode +# +# Environment variables are loaded from .env (copy from env.template) + services: hub-migrations:
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro
Disabled knowledge base sources:
- Linear integration is disabled by default for public repositories
You can enable these sources in your CodeRabbit configuration.
📒 Files selected for processing (6)
.gitignore(1 hunks)Dockerfile.db-based-migrations(2 hunks)README.md(15 hunks)example/docker/README.md(1 hunks)example/docker/compose.yaml(1 hunks)example/docker/env.template(1 hunks)
🔇 Additional comments (3)
.gitignore (1)
34-37: LGTM!The addition appropriately excludes the local Postgres data directory from version control, aligning with the Docker Compose setup.
Dockerfile.db-based-migrations (2)
9-11: LGTM!The apt-get formatting refactor is clean and maintains the same package set.
18-24: LGTM!The WORKDIR change to
/is intentional and aligns with the compose.yaml service configuration (line 4:working_dir: /). Since migrations are copied to/migrationsat line 18, sqlx will correctly locate them as./migrationsrelative to the root working directory. The entrypoint command is correct.
There was a problem hiding this comment.
Actionable comments posted: 2
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro
Disabled knowledge base sources:
- Linear integration is disabled by default for public repositories
You can enable these sources in your CodeRabbit configuration.
📒 Files selected for processing (4)
README.md(15 hunks)example/docker/README.md(1 hunks)example/docker/compose.yaml(1 hunks)example/docker/env.template(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
- example/docker/README.md
- example/docker/env.template
🔇 Additional comments (4)
README.md (1)
268-301: Documentation link and example are well-integrated.The Docker Compose section correctly references the detailed setup instructions at
./example/docker/README.mdand provides an inline quick-reference snippet. The documentation structure aligns with the project's deployment guidance.example/docker/compose.yaml (3)
10-18: Verify the hub-migrations image availability and build process.The compose file references
traceloop/hub-migrations(line 11), which appears to be a separate migration-specific image. Ensure this image is available in your registry or provide build instructions. If it's built locally, consider adding abuilddirective or clarifying in the relatedexample/docker/README.mdhow this image is prepared.
28-33: Verify Docker Compose version support for service completion conditions.The
hub-databaseservice depends onhub-migrationswith the conditionservice_completed_successfully(line 30). This condition was introduced in Docker Compose v1.29+. Confirm that the target environment supports this version, or document the minimum required version inexample/docker/README.md.
9-55: Postgres 15 pinning and health checks are well-configured.The postgres service correctly pins the image to
postgres:15(line 36), addressing reproducibility concerns. The health check (lines 47–51) with appropriate timeouts and retries ensures reliable service startup sequencing. Dependency conditions are properly configured for startup orchestration.
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Yes, I decided to share my working prototype for Docker Compose. The version from the documentation didn't work for me. |
|
It looks like merge request is ready for merge. But I don't see merge button. |
3 participants
Important
Add Docker Compose example, update README with link, and fix Dockerfile for migrations.
example/docker/compose.yamlfor running the application with Docker Compose.example/docker/env.templatefor environment variables.example/docker/README.mdwith instructions for running in daemon and simple modes.README.mdto include a link to the Docker Compose example.WORKDIRinDockerfile.db-based-migrationsto root directory/.This description was created by
for 4bfd4c5. You can customize this summary. It will automatically update as commits are pushed.
Summary by CodeRabbit
New Features
Documentation
Chores
✏️ Tip: You can customize this high-level summary in your review settings.