fix(docker): allow set base image tag (default latest)

fix #66

Author: lgaticaq

README.md

@@ -46,6 +46,7 @@ The plugin can be configured in the [**semantic-release** configuration file](ht
 | Variable             | Description                                                       |
 | -------------------- | ----------------------------------------------------------------- |
 | `baseImageName` | Name of the previously constructed docker image. Required. |
+| `baseImageTag` | Name of the previously constructed docker image tag. Optional. Default `"latest"` |
 | `registries` | Array of objects with username, password, url and imageName. "username" and "password" are environment variables. Required. Example: `{"username": "DOCKER_USER", "password": "DOCKER_PASSWORD", "url": "docker.pkg.github.com", "imageName": "docker.pkg.github.com/myuser/myrepo/myapp"}` |
 | `additionalTags` | Array of addiotional tags to push. Optional. Example: `["beta", "next"]` |
 

src/prepare.js

@@ -22,16 +22,17 @@ module.exports = async (pluginConfig, ctx) => {
     if (pluginConfig.additionalTags && pluginConfig.additionalTags.length > 0) {
       tags.push(...pluginConfig.additionalTags)
     }
+    const baseImageTag = pluginConfig.baseImageTag || 'latest'
     for (const tag of tags) {
       ctx.logger.log(
-        `Tagging docker image ${pluginConfig.baseImageName}:latest to ${pluginConfig.baseImageName}:${tag}`
+        `Tagging docker image ${pluginConfig.baseImageName}:${baseImageTag} to ${pluginConfig.baseImageName}:${tag}`
       )
       await image.tag({ repo: pluginConfig.baseImageName, tag })
     }
     for (const { imageName } of pluginConfig.registries) {
-      for (const tag of [...tags, 'latest']) {
+      for (const tag of [...tags, baseImageTag]) {
         ctx.logger.log(
-          `Tagging docker image ${pluginConfig.baseImageName}:latest to ${imageName}:${tag}`
+          `Tagging docker image ${pluginConfig.baseImageName}:${baseImageTag} to ${imageName}:${tag}`
         )
         await image.tag({ repo: imageName, tag })
       }

src/publish.js

@@ -47,7 +47,8 @@ const pushImage = response => {
 module.exports = async (pluginConfig, ctx) => {
   try {
     const docker = new Dockerode()
-    const tags = ['latest', ctx.nextRelease.version]
+    const baseImageTag = pluginConfig.baseImageTag || 'latest'
+    const tags = [baseImageTag, ctx.nextRelease.version]
     if (pluginConfig.additionalTags && pluginConfig.additionalTags.length > 0) {
       tags.push(...pluginConfig.additionalTags)
     }

src/types.d.ts

@@ -17,6 +17,7 @@ export interface Config extends SemanticReleaseConfig {
   additionalTags?: string[]
   registries?: Registry[]
   baseImageName?: string
+  baseImageTag?: string
 }
 
 export interface ExecOptions {