From 0d177b82c76964b7d20ae98b8f648cc19f3cdc61 Mon Sep 17 00:00:00 2001 From: Kevin Vo Date: Fri, 25 Jul 2025 16:16:05 -0700 Subject: [PATCH 1/5] Railpack doc --- docs/concepts/Railpack.md | 120 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 120 insertions(+) create mode 100644 docs/concepts/Railpack.md diff --git a/docs/concepts/Railpack.md b/docs/concepts/Railpack.md new file mode 100644 index 000000000..581f31d81 --- /dev/null +++ b/docs/concepts/Railpack.md @@ -0,0 +1,120 @@ +--- +title: Railpack +description: Defang will use Railpack to make an OCI-Compliant container image for your project. +sidebar_position: 500 +--- + +# Railpack + +[Railpack](https://railpack.com/) is a tool for building container images from source code with minimal configuration. It is the successor to [Nixpacks](https://nixpacks.com/) and incorporates several lessons learned from running Nixpacks in production at [Railway](https://railway.com/) over the years. + +In Defang deployments, one of the most common points of failure is a missing or invalid Dockerfile that can’t produce OCI-compliant images. This is especially common when Dockerfile are generated by LLMs or created by users with limited Docker experience. Since integrating Railpack into Defang, if no Dockerfile is provided, we now automatically build a working image for you using Railpack. + +## How to trigger a Defang Railpack deployment + +When you run a Defang Railpack deployment you need 2 components: + +1. A working application +2. A valid compose file + +Your compose file should not mention a Dockerfile. + +For example, + +```yaml +# compose.yaml +services: + app: + restart: unless-stopped + build: + context: . + deploy: + resources: + reservations: + cpus: "1.0" + memory: 512M + ports: + - mode: ingress + target: 3000 + published: 3000 +``` + +## Troubleshooting and tips + +If the deployment fails, here are some things you can try. + +### Railpack Detection + +To allow Railpack to generate a build plan for your project, please structure it to include the following files, or rename existing ones to be compatible. + +#### Node + +Your project will be detected as a Node.js application if a `package.json` file exists in the root directory. + +Here is an example of a Railpack ready NextJS project. +Here is an example of a Railpack ready React Vite project. + +#### Python + +Your project will be detected as a Python application if any of these conditions are met: + +- A main.py file exists in the root directory (If your main.py is named anything else) +- A requirements.txt file exists +- A pyproject.toml file exists +- A Pipfile exists + +Here is an example of a Railpack ready Flask project. +Here is an example of a Railpack ready Django project. + +#### Go + +Your project will be detected as a Go application if any of these conditions are met: + +- A go.mod file exists in the root directory +- A go.work file exists in the root directory (Go workspaces) +- A main.go file exists in the root directory + +Here is an example of a Railpack ready Golang project. + +#### PHP + +Your project will be detected as a PHP application if any of these conditions are met: + +- An index.php file exists in the root directory +- A composer.json file exists in the root directory + +#### Java + +Your project will be detected as a Java application if any of these conditions are met: + +- A gradlew (Gradle wrapper) file exists in the root directory (to create this, if you don’t have one, run gradle wrapper) +- A pom.{xml,atom,clj,groovy,rb,scala,yaml,yml} file exists in the root directory + +#### Ruby + +Your project will be detected as a Ruby application if any of these conditions are met: + +- A Gemfile file is present + +#### Rust + +Your project will be detected as a Rust application if any of these conditions are met: + +- A Cargo.toml file is present + +#### Elixir + +Your project will be detected as a Elixir application if any of these conditions are met: + +- A mix.exs file exists in the root directory. + +#### Static Sites + +Railpack can automatically build and setup a server for static sites that require no build steps. The [Caddy](https://caddyserver.com/) server is used as the underlying web server. + +Your project will be automatically detected as a static site if any of these conditions are met: + +- A Staticfile configuration file exists in the root directory +- An index.html file exists in the root directory +- A public directory exists +- The RAILPACK_STATIC_FILE_ROOT environment variable is set From a4c2536d3db8d66de324ecb1dd5e1f67c711dd8d Mon Sep 17 00:00:00 2001 From: commit111 Date: Fri, 25 Jul 2025 16:23:14 -0700 Subject: [PATCH 2/5] minor fix --- docs/concepts/railpack.mdx | 121 +++++++++++++++++++++++++++++++++++++ 1 file changed, 121 insertions(+) create mode 100644 docs/concepts/railpack.mdx diff --git a/docs/concepts/railpack.mdx b/docs/concepts/railpack.mdx new file mode 100644 index 000000000..33dddfb57 --- /dev/null +++ b/docs/concepts/railpack.mdx @@ -0,0 +1,121 @@ +--- +title: Railpack +description: Defang will use Railpack to make an OCI-Compliant container image for your project. +sidebar_position: 500 +--- + + + +# Railpack + +[Railpack](https://railpack.com/) is a tool for building container images from source code with minimal configuration. It is the successor to [Nixpacks](https://nixpacks.com/) and incorporates several lessons learned from running Nixpacks in production at [Railway](https://railway.com/) over the years. + +In Defang deployments, one of the most common points of failure is a missing or invalid Dockerfile that can’t produce OCI-compliant images. This is especially common when Dockerfile are generated by LLMs or created by users with limited Docker experience. Since integrating Railpack into Defang, if no Dockerfile is provided, we now automatically build a working image for you using Railpack. + +## How to trigger a Defang Railpack deployment + +When you run a Defang Railpack deployment you need 2 components: + +A working application +A valid compose file + +Your compose file should not mention a Dockerfile. + +For example, + +```yaml +services: + app: + restart: unless-stopped + build: + context: . + deploy: + resources: + reservations: + cpus: "1.0" + memory: 512M + ports: + - mode: ingress + target: 3000 + published: 3000 +``` + +## Troubleshooting and tips + +If the deployment fails, here are some things you can try. + +### Railpack Detection + +To allow Railpack to generate a build plan for your project, please structure it to include the following files, or rename existing ones to be compatible. + +#### Node + +Your project will be detected as a Node.js application if a `package.json` file exists in the root directory. + +Here is an example of a Railpack ready NextJS project. +Here is an example of a Railpack ready React Vite project. + +#### Python + +Your project will be detected as a Python application if any of these conditions are met: + +- A main.py file exists in the root directory (If your main.py is named anything else) +- A requirements.txt file exists +- A pyproject.toml file exists +- A Pipfile exists + +Here is an example of a Railpack ready Flask project. +Here is an example of a Railpack ready Django project. + +#### Go + +Your project will be detected as a Go application if any of these conditions are met: + +- A go.mod file exists in the root directory +- A go.work file exists in the root directory (Go workspaces) +- A main.go file exists in the root directory + +Here is an example of a Railpack ready Golang project. + +#### PHP + +Your project will be detected as a PHP application if any of these conditions are met: + +- An index.php file exists in the root directory +- A composer.json file exists in the root directory + +#### Java + +Your project will be detected as a Java application if any of these conditions are met: + +- A gradlew (Gradle wrapper) file exists in the root directory (to create this, if you don’t have one, run gradle wrapper) +- A `pom.{xml,atom,clj,groovy,rb,scala,yaml,yml}` file exists in the root directory + +#### Ruby + +Your project will be detected as a Ruby application if any of these conditions are met: + +- A Gemfile file is present + +#### Rust + +Your project will be detected as a Rust application if any of these conditions are met: + +- A Cargo.toml file is present + +#### Elixir + +Your project will be detected as a Elixir application if any of these conditions are met: + +- A mix.exs file exists in the root directory. + +#### Static Sites + +Railpack can automatically build and setup a server for static sites that require no build steps. The [Caddy](https://caddyserver.com/) server is used as the underlying web server. + +Your project will be automatically detected as a static site if any of these conditions are met: + +- A Staticfile configuration file exists in the root directory +- An index.html file exists in the root directory +- A public directory exists +- The `RAILPACK_STATIC_FILE_ROOT` environment variable is set From e3264418636dae2b2367df2cf95154233a0bb722 Mon Sep 17 00:00:00 2001 From: commit111 Date: Fri, 25 Jul 2025 16:23:22 -0700 Subject: [PATCH 3/5] delete old file --- docs/concepts/Railpack.md | 120 -------------------------------------- 1 file changed, 120 deletions(-) delete mode 100644 docs/concepts/Railpack.md diff --git a/docs/concepts/Railpack.md b/docs/concepts/Railpack.md deleted file mode 100644 index 581f31d81..000000000 --- a/docs/concepts/Railpack.md +++ /dev/null @@ -1,120 +0,0 @@ ---- -title: Railpack -description: Defang will use Railpack to make an OCI-Compliant container image for your project. -sidebar_position: 500 ---- - -# Railpack - -[Railpack](https://railpack.com/) is a tool for building container images from source code with minimal configuration. It is the successor to [Nixpacks](https://nixpacks.com/) and incorporates several lessons learned from running Nixpacks in production at [Railway](https://railway.com/) over the years. - -In Defang deployments, one of the most common points of failure is a missing or invalid Dockerfile that can’t produce OCI-compliant images. This is especially common when Dockerfile are generated by LLMs or created by users with limited Docker experience. Since integrating Railpack into Defang, if no Dockerfile is provided, we now automatically build a working image for you using Railpack. - -## How to trigger a Defang Railpack deployment - -When you run a Defang Railpack deployment you need 2 components: - -1. A working application -2. A valid compose file - -Your compose file should not mention a Dockerfile. - -For example, - -```yaml -# compose.yaml -services: - app: - restart: unless-stopped - build: - context: . - deploy: - resources: - reservations: - cpus: "1.0" - memory: 512M - ports: - - mode: ingress - target: 3000 - published: 3000 -``` - -## Troubleshooting and tips - -If the deployment fails, here are some things you can try. - -### Railpack Detection - -To allow Railpack to generate a build plan for your project, please structure it to include the following files, or rename existing ones to be compatible. - -#### Node - -Your project will be detected as a Node.js application if a `package.json` file exists in the root directory. - -Here is an example of a Railpack ready NextJS project. -Here is an example of a Railpack ready React Vite project. - -#### Python - -Your project will be detected as a Python application if any of these conditions are met: - -- A main.py file exists in the root directory (If your main.py is named anything else) -- A requirements.txt file exists -- A pyproject.toml file exists -- A Pipfile exists - -Here is an example of a Railpack ready Flask project. -Here is an example of a Railpack ready Django project. - -#### Go - -Your project will be detected as a Go application if any of these conditions are met: - -- A go.mod file exists in the root directory -- A go.work file exists in the root directory (Go workspaces) -- A main.go file exists in the root directory - -Here is an example of a Railpack ready Golang project. - -#### PHP - -Your project will be detected as a PHP application if any of these conditions are met: - -- An index.php file exists in the root directory -- A composer.json file exists in the root directory - -#### Java - -Your project will be detected as a Java application if any of these conditions are met: - -- A gradlew (Gradle wrapper) file exists in the root directory (to create this, if you don’t have one, run gradle wrapper) -- A pom.{xml,atom,clj,groovy,rb,scala,yaml,yml} file exists in the root directory - -#### Ruby - -Your project will be detected as a Ruby application if any of these conditions are met: - -- A Gemfile file is present - -#### Rust - -Your project will be detected as a Rust application if any of these conditions are met: - -- A Cargo.toml file is present - -#### Elixir - -Your project will be detected as a Elixir application if any of these conditions are met: - -- A mix.exs file exists in the root directory. - -#### Static Sites - -Railpack can automatically build and setup a server for static sites that require no build steps. The [Caddy](https://caddyserver.com/) server is used as the underlying web server. - -Your project will be automatically detected as a static site if any of these conditions are met: - -- A Staticfile configuration file exists in the root directory -- An index.html file exists in the root directory -- A public directory exists -- The RAILPACK_STATIC_FILE_ROOT environment variable is set From a41cc4a9b686a36c0bc76f9ed91b42bc76832aa7 Mon Sep 17 00:00:00 2001 From: Kevin Vo Date: Fri, 25 Jul 2025 17:18:48 -0700 Subject: [PATCH 4/5] Railpack review --- docs/concepts/{railpack.mdx => railpack.md} | 63 ++++++++++++++------- 1 file changed, 44 insertions(+), 19 deletions(-) rename docs/concepts/{railpack.mdx => railpack.md} (67%) diff --git a/docs/concepts/railpack.mdx b/docs/concepts/railpack.md similarity index 67% rename from docs/concepts/railpack.mdx rename to docs/concepts/railpack.md index 33dddfb57..b21133944 100644 --- a/docs/concepts/railpack.mdx +++ b/docs/concepts/railpack.md @@ -4,8 +4,6 @@ description: Defang will use Railpack to make an OCI-Compliant container image f sidebar_position: 500 --- - - # Railpack [Railpack](https://railpack.com/) is a tool for building container images from source code with minimal configuration. It is the successor to [Nixpacks](https://nixpacks.com/) and incorporates several lessons learned from running Nixpacks in production at [Railway](https://railway.com/) over the years. @@ -16,10 +14,10 @@ In Defang deployments, one of the most common points of failure is a missing or When you run a Defang Railpack deployment you need 2 components: -A working application -A valid compose file +1. A working application +2. A valid Compose file -Your compose file should not mention a Dockerfile. +Your Compose file should not mention a Dockerfile. For example, @@ -48,14 +46,16 @@ If the deployment fails, here are some things you can try. To allow Railpack to generate a build plan for your project, please structure it to include the following files, or rename existing ones to be compatible. -#### Node +#### [Node](https://railpack.com/languages/node/) Your project will be detected as a Node.js application if a `package.json` file exists in the root directory. -Here is an example of a Railpack ready NextJS project. -Here is an example of a Railpack ready React Vite project. +Here is an example of: + +- A Railpack-ready [React Vite project](https://github.com/DefangLabs/samples/tree/main/samples/react-vite-railpack) +- A Railpack-ready [NextJS project](https://github.com/DefangLabs/samples/tree/main/samples/nextjs-railpack) -#### Python +#### [Python](https://railpack.com/languages/python) Your project will be detected as a Python application if any of these conditions are met: @@ -64,10 +64,12 @@ Your project will be detected as a Python application if any of these conditions - A pyproject.toml file exists - A Pipfile exists -Here is an example of a Railpack ready Flask project. -Here is an example of a Railpack ready Django project. +Here is an example of: -#### Go +- A Railpack-ready [Django project](https://github.com/DefangLabs/samples/tree/main/samples/django-railpack) +- A Railpack-ready [Flask project](https://github.com/DefangLabs/samples/tree/main/samples/flask-railpack) + +#### [Go](https://railpack.com/languages/golang) Your project will be detected as a Go application if any of these conditions are met: @@ -75,41 +77,43 @@ Your project will be detected as a Go application if any of these conditions are - A go.work file exists in the root directory (Go workspaces) - A main.go file exists in the root directory -Here is an example of a Railpack ready Golang project. +Here is an example of: + +- A Railpack-ready [Golang project](https://github.com/DefangLabs/samples/tree/main/samples/golang-http-form-railpack) -#### PHP +#### [PHP](https://railpack.com/languages/php) Your project will be detected as a PHP application if any of these conditions are met: - An index.php file exists in the root directory - A composer.json file exists in the root directory -#### Java +#### [Java](https://railpack.com/languages/java) Your project will be detected as a Java application if any of these conditions are met: - A gradlew (Gradle wrapper) file exists in the root directory (to create this, if you don’t have one, run gradle wrapper) - A `pom.{xml,atom,clj,groovy,rb,scala,yaml,yml}` file exists in the root directory -#### Ruby +#### [Ruby](https://railpack.com/languages/ruby) Your project will be detected as a Ruby application if any of these conditions are met: - A Gemfile file is present -#### Rust +#### [Rust](https://railpack.com/languages/rust) Your project will be detected as a Rust application if any of these conditions are met: - A Cargo.toml file is present -#### Elixir +#### [Elixir](https://railpack.com/languages/elixir) Your project will be detected as a Elixir application if any of these conditions are met: - A mix.exs file exists in the root directory. -#### Static Sites +#### [Static Sites](https://railpack.com/languages/staticfile) Railpack can automatically build and setup a server for static sites that require no build steps. The [Caddy](https://caddyserver.com/) server is used as the underlying web server. @@ -119,3 +123,24 @@ Your project will be automatically detected as a static site if any of these con - An index.html file exists in the root directory - A public directory exists - The `RAILPACK_STATIC_FILE_ROOT` environment variable is set + +Static sites are served using the Caddy web server and you need to have the environment variable `PORT` exposed like this in the Compose file to map to the correct port: + +``` +services: + app: + restart: "unless-stopped" + build: + context: ./app + # This is the port you need to add + environment: + PORT: 5173 # <--- PORT + ports: + - target: 5173 + published: 5173 + mode: ingress + deploy: + resources: + reservations: + memory: 512M +``` From 3d101d38a8b1381155ffb20f295cb34a41ccd6a4 Mon Sep 17 00:00:00 2001 From: Kevin Vo Date: Fri, 25 Jul 2025 17:23:03 -0700 Subject: [PATCH 5/5] Apply feedback --- docs/concepts/railpack.md | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/docs/concepts/railpack.md b/docs/concepts/railpack.md index b21133944..af0a5b5c2 100644 --- a/docs/concepts/railpack.md +++ b/docs/concepts/railpack.md @@ -8,11 +8,11 @@ sidebar_position: 500 [Railpack](https://railpack.com/) is a tool for building container images from source code with minimal configuration. It is the successor to [Nixpacks](https://nixpacks.com/) and incorporates several lessons learned from running Nixpacks in production at [Railway](https://railway.com/) over the years. -In Defang deployments, one of the most common points of failure is a missing or invalid Dockerfile that can’t produce OCI-compliant images. This is especially common when Dockerfile are generated by LLMs or created by users with limited Docker experience. Since integrating Railpack into Defang, if no Dockerfile is provided, we now automatically build a working image for you using Railpack. +In Defang deployments, one of the most common issues faced by users is a missing or invalid Dockerfile that can’t produce OCI-compliant images. This is especially common when Dockerfile are generated by LLMs or created by users with limited Docker experience. Since integrating Railpack into Defang, if no Dockerfile is provided, we now automatically build a working image for you using Railpack. ## How to trigger a Defang Railpack deployment -When you run a Defang Railpack deployment you need 2 components: +When you run a Defang Railpack deployment, you need 2 components: 1. A working application 2. A valid Compose file @@ -44,7 +44,7 @@ If the deployment fails, here are some things you can try. ### Railpack Detection -To allow Railpack to generate a build plan for your project, please structure it to include the following files, or rename existing ones to be compatible. +To allow Railpack to generate a build plan for your project, please restructure or rename your existing project files to be Railpack-compatible, as described for each framework below. #### [Node](https://railpack.com/languages/node/) @@ -111,7 +111,7 @@ Your project will be detected as a Rust application if any of these conditions a Your project will be detected as a Elixir application if any of these conditions are met: -- A mix.exs file exists in the root directory. +- A mix.exs file exists in the root directory #### [Static Sites](https://railpack.com/languages/staticfile)