feat: disable push into :latest tag (#12)

BREAKING CHANGE: no longer pushes latest tag without a special flag of `--tag_latest`

bin/cmds/docker.js

@@ -16,6 +16,12 @@ exports.builder = (yargs) => (
       boolean: true,
       default: true,
     })
+    .option('tag_latest', {
+      alias: 'tl',
+      describe: 'adds :latest tag to the image',
+      boolean: true,
+      default: false,
+    })
     .option('docker_file', {
       alias: 'f',
       describe: 'path to docker file',
@@ -33,13 +39,18 @@ exports.handler = (argv) => {
   argv.base = `${argv.repository}/${argv.project}`;
   argv.baseTag = argv.include_node ? `${argv.node}-${argv.version}` : argv.version;
   argv.mainTag = `${argv.base}:${argv.baseTag}`;
-  argv.tags = [`${argv.base}:latest`];
+  argv.tags = [];
 
   // adds extra tag
   if (argv.include_node) {
     argv.tags.push(`${argv.base}:${argv.node}`);
   }
 
+  // adds :latest tag
+  if (argv.tag_latest) {
+    argv.tags.push(`${argv.base}:latest`);
+  }
+
   // a little bit hacky
   exports.called = true;
 };

doc/rfc/docker_disable_latest_tag.md

@@ -0,0 +1,10 @@
+# Disable push using `:latest` tag
+
+## Overview and Motivation
+`docker deploy/release/` command pushes images with `baseTag:latest` tag into Docker Hub.
+This happens even if we built a beta or alpha version of the image. If the project has docker image dependency without version tag,
+this beta image will be used.
+
+## `--tag_latest [false]` param
+New `--tag_latest` param(defaults to false) instruct `deploy` command to add `${baseTag}:latest` tag to the image.
+Otherwise `:latest` tag not assigned to the image.