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Find exposed ports

org.openrewrite.docker.search.FindExposedPorts

Find all EXPOSE instructions in Dockerfiles and report the exposed ports.

Recipe source​

GitHub: FindExposedPorts.java, Issue Tracker, Maven Central

This recipe is available under the Apache License Version 2.0.

Options​

TypeNameDescriptionExample
StringportPatternOptional. A glob pattern to filter ports. For example, '80*' to find ports starting with 80. If not specified, all EXPOSE instructions are matched.80*

Usage​

This recipe has no required configuration options. It can be activated by adding a dependency on org.openrewrite:rewrite-docker in your build file or by running a shell command (in which case no build changes are needed):

  1. Add the following to your build.gradle file:
build.gradle
plugins {
    id("org.openrewrite.rewrite") version("latest.release")
}

rewrite {
    activeRecipe("org.openrewrite.docker.search.FindExposedPorts")
    setExportDatatables(true)
}

repositories {
    mavenCentral()
}

dependencies {
    rewrite("org.openrewrite:rewrite-docker:8.73.0")
}
  1. Run gradle rewriteRun to run the recipe.

See how this recipe works across multiple open-source repositories​

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Data Tables​

Docker exposed ports​

org.openrewrite.docker.table.ExposedPorts

Records all ports exposed in EXPOSE instructions in Dockerfiles.

Column NameDescription
Source fileThe Dockerfile containing the EXPOSE instruction.
Stage nameThe build stage name if the EXPOSE is in a named stage.
PortThe port number or range (e.g., '80' or '8000-8100').
ProtocolThe protocol if specified (tcp or udp), null if not specified.