start conversion to javascript action

.gitignore

@@ -1 +1,2 @@
 **/.idea/
+node_modules/

action.yml

@@ -2,7 +2,7 @@ name: 'Docker'
 description: 'Build and publish docker images'
 
 inputs:
-  docker-image:
+  docker_image:
     description: docker client image to use for building images
     default: "docker:latest"
 
@@ -99,162 +99,7 @@ inputs:
 outputs:
   published_tags:
     description: "Published tags as csv"
-    value: ""
 
 runs:
-  using: "composite"
+  using: "node20"
-  steps:
+  main: ./dist/index.js
-    - name: "dummy step"
-      shell: bash
-      run: echo dummy step changed
-
-    - id: information
-      uses: https://gitea.dhswt.de/actions/information@master
-
-    - name: add ci registry to targets
-      shell: bash
-      if: inputs.add_ci_registry_target == 'true'
-      run: |
-        echo "steps.information.outputs.ci_hostname=${{ steps.information.outputs.ci_hostname }}"
-        echo "steps.information_hostname.outputs.ci_hostname=${{ steps.information_hostname.outputs.ci_hostname }}"
-
-        CI_REGISTRY="${{ steps.information.outputs.ci_hostname }}"
-
-        echo "CI_REGISTRY=$CI_REGISTRY" >> $GITHUB_ENV
-        echo "::debug::using CI_REGISTRY=$CI_REGISTRY"
-
-        REGISTRY_TARGETS="$CI_REGISTRY/$GITHUB_REPOSITORY:" # needs to have : suffix
-        echo "REGISTRY_TARGETS=$REGISTRY_TARGETS" >> $GITHUB_ENV
-
-        echo "::debug::adding $CI_REGISTRY/$GITHUB_REPOSITORY to registry targets"
-
-    - name: add additional registries
-      shell: bash
-      run: |
-        IFS=","
-        for REGISTRY in $INPUT_ADDITIONAL_REGISTRIES; do
-          # add ":" to registry paths missing it
-          if [[ "$REGISTRY" != *":"* ]]; then
-            REGISTRY="$REGISTRY:"
-          fi
-
-          echo "::debug::adding $REGISTRY to REGISTRY_TARGETS"
-
-          REGISTRY_TARGETS="$REGISTRY_TARGETS,$REGISTRY"
-        done
-        IFS="$OLD_IFS"
-
-        echo "::debug::REGISTRY_TARGETS=$REGISTRY_TARGETS" >> $GITHUB_ENV
-
-    - name: add ci registry auth
-      shell: bash
-      if: inputs.add_ci_registry_auth == 'true'
-      run: |
-        REGISTRY_AUTH_JSON="$REGISTRY_AUTH_JSON {\"auths\":{\"$CI_REGISTRY\":{\"auth\":\"$(echo -n token:$CI_REGISTRY_PASSWORD | base64)\"}}}"
-        echo "REGISTRY_AUTH_JSON=$REGISTRY_AUTH_JSON" >> $GITHUB_ENV
-
-    - name: merge registry auth json
-      shell: bash
-      if: inputs.merge_registry_auth_json == 'true'
-      run: |
-        if [[ ! -z "$REGISTRY_AUTH_JSON" ]]; then
-          REGISTRY_AUTH_JSON=$(echo "$REGISTRY_AUTH_JSON" | jq --slurp 'reduce .[] as $item ({}; . * $item)')
-          echo "REGISTRY_AUTH_JSON=$REGISTRY_AUTH_JSON" >> $GITHUB_ENV
-        fi
-
-    - name: generate registry auth json file
-      shell: bash
-      run: |
-        if [[ ! -z "$REGISTRY_AUTH_JSON" ]]; then
-          mkdir -p /home/runner/.docker
-          echo "$REGISTRY_AUTH_JSON" > /home/runner/.docker/config.json
-        fi
-  
-    - name: collect tags
-      shell: bash
-      run: |
-        if [[ "$INPUT_TAG_COMMIT_ENABLE" == "true" ]]; then
-          IMAGE_TAGS="$IMAGE_TAGS,$INPUT_TAG_PREFIX$INPUT_TAG_COMMIT_PREFIX$GITHUB_SHA$INPUT_TAG_SUFFIX"
-        fi
-
-        # TODO extract semver vars from tag/branch, candidate for refactor to common info gathering action
-        # add semver major tag              if enabled and available, exclude "0"     tag
-        # add semver major.minor tag        if enabled and available, exclude "0.0"   tag
-        # add semver major.minor.patch tag  if enabled and available, exclude "0.0.0" tag
-        if [[ "$INPUT_TAG_SEMVER_MAJOR" == "true" ]] && [[ ! -z $SEMVER_MAJOR ]] && [[ "$SEMVER_MAJOR" != "0" ]]; then
-          IMAGE_TAGS="$IMAGE_TAGS,$INPUT_TAG_PREFIX$SEMVER_MAJOR"
-          TAG_REF_NORMALIZED_ENABLE=0
-        fi
-        if [[ "$INPUT_TAG_SEMVER_MINOR" == "true" ]] && [[ ! -z $SEMVER_MINOR ]] && [[ "$SEMVER_MAJOR_MINOR" != "0.0" ]]; then
-          IMAGE_TAGS="$IMAGE_TAGS,$INPUT_TAG_PREFIX$SEMVER_MAJOR_MINOR"
-          TAG_REF_NORMALIZED_ENABLE=0
-        fi
-        if [[ "$INPUT_TAG_SEMVER_PATCH" == "true" ]] && [[ ! -z $SEMVER_PATCH ]] && [[ "$SEMVER_MAJOR_MINOR_PATCH" != "0.0.0" ]]; then
-          IMAGE_TAGS="$IMAGE_TAGS,$INPUT_TAG_PREFIX$SEMVER_MAJOR_MINOR_PATCH"
-          TAG_REF_NORMALIZED_ENABLE=0
-        fi
-
-        # add tag for reference if available using normalization
-        # - dont add tag if semver tags were added
-        # - attempt to build tag first
-        # - attempt to build branch if not a PR (if not PR for extra security, variable description on drone unclear)
-        if [[ "$INPUT_TAG_REF_NORMALIZED_ENABLE" == "true" ]] && [[ ! -z $DRONE_TAG ]]; then
-          echo "::debug::adding docker tag for git tag"
-          REF_TAG_NORMALIZED=$(echo $DRONE_TAG | sed s:/:-:g)
-          IMAGE_TAGS="$IMAGE_TAGS,$INPUT_TAG_PREFIX$REF_TAG_NORMALIZED$INPUT_TAG_SUFFIX"
-        elif [[ "$INPUT_TAG_REF_NORMALIZED_ENABLE" == "true" ]] && [[ -z "$DRONE_PULL_REQUEST" ]] && [[ ! -z $DRONE_BRANCH ]]; then
-          echo "adding tag for branch"
-          REF_TAG_NORMALIZED=$(echo $DRONE_BRANCH | sed s:/:-:g)
-          IMAGE_TAGS="$IMAGE_TAGS,$INPUT_TAG_PREFIX$REF_TAG_NORMALIZED$INPUT_TAG_SUFFIX"
-        fi
-
-        # prepare destinations by combining registries + tags
-        echo "# preparing destinations:"
-        IMAGE_DESTS=""
-        IMAGE_DESTS_PUSH=""
-        IFS=","
-        for REGISTRY in $REGISTRY_TARGETS; do
-          if [[ -z "$REGISTRY" ]]; then continue; fi
-
-          for IMAGE_TAG in $IMAGE_TAGS; do
-            if [[ -z "$IMAGE_TAG" ]]; then continue; fi
-            echo "::debug::- $REGISTRY$IMAGE_TAG"
-            IMAGE_DESTS="$IMAGE_DESTS --tag $REGISTRY$IMAGE_TAG"
-            IMAGE_DESTS_PUSH="$IMAGE_DESTS_PUSH $REGISTRY$IMAGE_TAG"
-          done
-        done
-        IMAGE_DESTS=$(echo $IMAGE_DESTS | xargs)
-        IMAGE_DESTS_PUSH=$(echo $IMAGE_DESTS_PUSH | xargs)
-        IFS="$OLD_IFS"
-
-        echo "IMAGE_DESTS=$IMAGE_DESTS" >> $GITHUB_ENV
-        echo "IMAGE_DESTS_PUSH=$IMAGE_DESTS_PUSH" >> $GITHUB_ENV
-      
-    - name: prepare docker args
-      shell: bash
-      run: |
-        # prepare docker build args
-        if [[ -z "$DOCKER_ARGS" ]]; then
-          DOCKER_ARGS=""
-        fi
-        DOCKER_ARGS="$INPUT_CONTEXT_DIR --file $INPUT_DOCKERFILE $INPUT_DOCKER_ARGS $DOCKER_ARGS"
-
-        if [[ "$INPUT_SQUASH_LAYERS" == "true" ]]; then
-          DOCKER_ARGS="$DOCKER_ARGS --squash"
-        fi
-        if [[ ! -z "$IMAGE_DESTS" ]]; then
-          DOCKER_ARGS="$DOCKER_ARGS $IMAGE_DESTS"
-        fi
-        if [[ ! -z "$INPUT_ADDITIONAL_REGISTRY_DESTINATIONS" ]]; then
-          DOCKER_ARGS="$DOCKER_ARGS $INPUT_ADDITIONAL_REGISTRY_DESTINATIONS"
-        fi
-
-        echo "DOCKER_ARGS=$DOCKER_ARGS" >> $GITHUB_ENV
-        echo "::debug:: DOCKER_ARGS=$DOCKER_ARGS"
-
-    - name: debug print env
-      shell: bash
-      run: |
-        echo "::debug::printing env"
-        echo "::debug:: $(env)"
-    

action.yml.oldbash

@@ -0,0 +1,252 @@
+name: 'Docker'
+description: 'Build and publish docker images'
+
+inputs:
+  docker_image:
+    description: docker client image to use for building images
+    default: "docker:latest"
+
+  docker_args:
+    description: "Extra arguments to pass to docker invocation"
+    default: ""
+
+  tag_prefix:
+    description: "a prefix to add to all docker tags"
+
+  tag_suffix:
+    description: "a suffix to add to all docker tags"
+
+  tag_commit_enable:
+    description: "generate docker tags for git tag if present"
+    default: "true"
+
+  tag_commit_prefix:
+    description: "a suffix to add to docker tags that were generated from commit sha"
+    default: "commit-"
+
+  tag_ref_slug_enable:
+    description: "generate a tag from the git ref slug"
+    default: "false"
+
+  tag_ref_normalized_enable:
+    description: ""
+    default: "true"
+
+  tag_semver_major:
+    description: ""
+    default: "true"
+
+  tag_semver_minor:
+    description: ""
+    default: "true"
+
+  tag_semver_patch:
+    description: ""
+    default: "true"
+
+  additional_registry_destinations:
+    description: "a list of --destination registry/orga/repo:tag strings, space separated"
+    default: ""
+
+  squash_layers:
+    description: ""
+    default: "true"
+
+  additional_registries:
+    description: ""
+    default: ""
+
+  add_ci_registry_auth:
+    description: ""
+    default: "true"
+
+  add_ci_registry_target:
+    description: ""
+    default: "true"
+
+  registry_auth_json:
+    description: ""
+    default: ""
+
+  merge_registry_json:
+    description: ""
+    default: "true"
+
+  push_tags:
+    description: ""
+    default: "true"
+
+  docker_buildkit:
+    description: ""
+    default: "1"
+
+  docker_multi_arch:
+    description: ""
+    default: "false"
+
+  dockerfile:
+    description: "Dockerfile used to build images"
+    default: "Dockerfile"
+
+  docker_context_dir:
+    description: "${{ github.workspace }}"
+
+  ci_registry_password:
+    description: "password/token for default ci registry, should usually be set to secret value with ${{ secrets.someSecretName }} for gitea"
+    default: ""
+    required: false
+
+outputs:
+  published_tags:
+    description: "Published tags as csv"
+    value: ""
+
+runs:
+  using: "composite"
+  steps:
+    - id: information
+      uses: https://gitea.dhswt.de/actions/information@master
+
+    - name: add ci registry to targets
+      shell: bash
+      if: inputs.add_ci_registry_target == 'true'
+      run: |
+        CI_REGISTRY="${{ steps.information.outputs.ci_hostname }}"
+
+        echo "CI_REGISTRY=$CI_REGISTRY" >> $GITHUB_ENV
+        echo "::debug::using CI_REGISTRY=$CI_REGISTRY"
+
+        REGISTRY_TARGETS="$CI_REGISTRY/$GITHUB_REPOSITORY:" # needs to have : suffix
+        echo "REGISTRY_TARGETS=$REGISTRY_TARGETS" >> $GITHUB_ENV
+
+        echo "::debug::adding $CI_REGISTRY/$GITHUB_REPOSITORY to registry targets"
+
+    - name: add additional registries
+      shell: bash
+      run: |
+        IFS=","
+        for REGISTRY in $INPUT_ADDITIONAL_REGISTRIES; do
+          # add ":" to registry paths missing it
+          if [[ "$REGISTRY" != *":"* ]]; then
+            REGISTRY="$REGISTRY:"
+          fi
+
+          echo "::debug::adding $REGISTRY to REGISTRY_TARGETS"
+
+          REGISTRY_TARGETS="$REGISTRY_TARGETS,$REGISTRY"
+        done
+        IFS="$OLD_IFS"
+
+        echo "::debug::REGISTRY_TARGETS=$REGISTRY_TARGETS" >> $GITHUB_ENV
+
+    - name: add ci registry auth
+      shell: bash
+      if: inputs.add_ci_registry_auth == 'true'
+      run: |
+        REGISTRY_AUTH_JSON="$REGISTRY_AUTH_JSON {\"auths\":{\"$CI_REGISTRY\":{\"auth\":\"$(echo -n token:$CI_REGISTRY_PASSWORD | base64)\"}}}"
+        echo "REGISTRY_AUTH_JSON=$REGISTRY_AUTH_JSON" >> $GITHUB_ENV
+
+    - name: merge registry auth json
+      shell: bash
+      if: inputs.merge_registry_auth_json == 'true'
+      run: |
+        if [[ ! -z "$REGISTRY_AUTH_JSON" ]]; then
+          REGISTRY_AUTH_JSON=$(echo "$REGISTRY_AUTH_JSON" | jq --slurp 'reduce .[] as $item ({}; . * $item)')
+          echo "REGISTRY_AUTH_JSON=$REGISTRY_AUTH_JSON" >> $GITHUB_ENV
+        fi
+
+    - name: generate registry auth json file
+      shell: bash
+      run: |
+        if [[ ! -z "$REGISTRY_AUTH_JSON" ]]; then
+          mkdir -p /home/runner/.docker
+          echo "$REGISTRY_AUTH_JSON" > /home/runner/.docker/config.json
+        fi
+
+    - name: collect tags
+      shell: bash
+      run: |
+        if [[ "$INPUT_TAG_COMMIT_ENABLE" == "true" ]]; then
+          IMAGE_TAGS="$IMAGE_TAGS,$INPUT_TAG_PREFIX$INPUT_TAG_COMMIT_PREFIX$GITHUB_SHA$INPUT_TAG_SUFFIX"
+        fi
+
+        # TODO extract semver vars from tag/branch, candidate for refactor to common info gathering action
+        # add semver major tag              if enabled and available, exclude "0"     tag
+        # add semver major.minor tag        if enabled and available, exclude "0.0"   tag
+        # add semver major.minor.patch tag  if enabled and available, exclude "0.0.0" tag
+        if [[ "$INPUT_TAG_SEMVER_MAJOR" == "true" ]] && [[ ! -z $SEMVER_MAJOR ]] && [[ "$SEMVER_MAJOR" != "0" ]]; then
+          IMAGE_TAGS="$IMAGE_TAGS,$INPUT_TAG_PREFIX$SEMVER_MAJOR"
+          TAG_REF_NORMALIZED_ENABLE=0
+        fi
+        if [[ "$INPUT_TAG_SEMVER_MINOR" == "true" ]] && [[ ! -z $SEMVER_MINOR ]] && [[ "$SEMVER_MAJOR_MINOR" != "0.0" ]]; then
+          IMAGE_TAGS="$IMAGE_TAGS,$INPUT_TAG_PREFIX$SEMVER_MAJOR_MINOR"
+          TAG_REF_NORMALIZED_ENABLE=0
+        fi
+        if [[ "$INPUT_TAG_SEMVER_PATCH" == "true" ]] && [[ ! -z $SEMVER_PATCH ]] && [[ "$SEMVER_MAJOR_MINOR_PATCH" != "0.0.0" ]]; then
+          IMAGE_TAGS="$IMAGE_TAGS,$INPUT_TAG_PREFIX$SEMVER_MAJOR_MINOR_PATCH"
+          TAG_REF_NORMALIZED_ENABLE=0
+        fi
+
+        # add tag for reference if available using normalization
+        # - dont add tag if semver tags were added
+        # - attempt to build tag first
+        # - attempt to build branch if not a PR (if not PR for extra security, variable description on drone unclear)
+        if [[ "$INPUT_TAG_REF_NORMALIZED_ENABLE" == "true" ]] && [[ ! -z $DRONE_TAG ]]; then
+          echo "::debug::adding docker tag for git tag"
+          REF_TAG_NORMALIZED=$(echo $DRONE_TAG | sed s:/:-:g)
+          IMAGE_TAGS="$IMAGE_TAGS,$INPUT_TAG_PREFIX$REF_TAG_NORMALIZED$INPUT_TAG_SUFFIX"
+        elif [[ "$INPUT_TAG_REF_NORMALIZED_ENABLE" == "true" ]] && [[ -z "$DRONE_PULL_REQUEST" ]] && [[ ! -z $DRONE_BRANCH ]]; then
+          echo "adding tag for branch"
+          REF_TAG_NORMALIZED=$(echo $DRONE_BRANCH | sed s:/:-:g)
+          IMAGE_TAGS="$IMAGE_TAGS,$INPUT_TAG_PREFIX$REF_TAG_NORMALIZED$INPUT_TAG_SUFFIX"
+        fi
+
+        # prepare destinations by combining registries + tags
+        echo "# preparing destinations:"
+        IMAGE_DESTS=""
+        IMAGE_DESTS_PUSH=""
+        IFS=","
+        for REGISTRY in $REGISTRY_TARGETS; do
+          if [[ -z "$REGISTRY" ]]; then continue; fi
+
+          for IMAGE_TAG in $IMAGE_TAGS; do
+            if [[ -z "$IMAGE_TAG" ]]; then continue; fi
+            echo "::debug::- $REGISTRY$IMAGE_TAG"
+            IMAGE_DESTS="$IMAGE_DESTS --tag $REGISTRY$IMAGE_TAG"
+            IMAGE_DESTS_PUSH="$IMAGE_DESTS_PUSH $REGISTRY$IMAGE_TAG"
+          done
+        done
+        IMAGE_DESTS=$(echo $IMAGE_DESTS | xargs)
+        IMAGE_DESTS_PUSH=$(echo $IMAGE_DESTS_PUSH | xargs)
+        IFS="$OLD_IFS"
+
+        echo "IMAGE_DESTS=$IMAGE_DESTS" >> $GITHUB_ENV
+        echo "IMAGE_DESTS_PUSH=$IMAGE_DESTS_PUSH" >> $GITHUB_ENV
+
+    - name: prepare docker args
+      shell: bash
+      run: |
+        # prepare docker build args
+        if [[ -z "$DOCKER_ARGS" ]]; then
+          DOCKER_ARGS=""
+        fi
+        DOCKER_ARGS="$INPUT_CONTEXT_DIR --file $INPUT_DOCKERFILE $INPUT_DOCKER_ARGS $DOCKER_ARGS"
+
+        if [[ "$INPUT_SQUASH_LAYERS" == "true" ]]; then
+          DOCKER_ARGS="$DOCKER_ARGS --squash"
+        fi
+        if [[ ! -z "$IMAGE_DESTS" ]]; then
+          DOCKER_ARGS="$DOCKER_ARGS $IMAGE_DESTS"
+        fi
+        if [[ ! -z "$INPUT_ADDITIONAL_REGISTRY_DESTINATIONS" ]]; then
+          DOCKER_ARGS="$DOCKER_ARGS $INPUT_ADDITIONAL_REGISTRY_DESTINATIONS"
+        fi
+
+        echo "DOCKER_ARGS=$DOCKER_ARGS" >> $GITHUB_ENV
+        echo "::debug:: DOCKER_ARGS=$DOCKER_ARGS"
+
+    - name: debug print env
+      shell: bash
+      run: |
+        echo "::debug::printing env"
+        echo "::debug:: $(env)"

package.json

@@ -0,0 +1,37 @@
+{
+  "name": "docker",
+  "version": "1.0.0",
+  "description": "",
+  "main": "src/index.js",
+  "scripts": {
+    "bundle": "npm run format:write && npm run package",
+    "ci-test": "jest",
+    "format:write": "prettier --write **/*.js",
+    "format:check": "prettier --check **/*.js",
+    "lint": "npx eslint . -c ./.github/linters/.eslintrc.yml",
+    "package": "ncc build src/action.js",
+    "package:watch": "npm run package -- --watch",
+    "test": "(jest && make-coverage-badge --output-path ./badges/coverage.svg) || make-coverage-badge --output-path ./badges/coverage.svg",
+    "all": "npm run format:write && npm run lint && npm run test && npm run package"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "@actions/core": "^1.10.1",
+    "@actions/github": "^6.0.0",
+    "information": "file:../information"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.23.5",
+    "@babel/eslint-parser": "^7.23.3",
+    "@babel/preset-env": "^7.23.5",
+    "@vercel/ncc": "^0.38.1",
+    "babel-preset-jest": "^29.6.3",
+    "eslint": "^8.54.0",
+    "eslint-plugin-github": "^4.10.1",
+    "eslint-plugin-jest": "^27.6.0",
+    "jest": "^29.7.0",
+    "make-coverage-badge": "^1.2.0",
+    "prettier": "^3.1.0"
+  }
+}

src/lib.js

@@ -0,0 +1,138 @@
+import * as core from '@actions/core';
+import * as github from '@actions/github';
+import * as fs from 'fs';
+
+export function processAdditionalRegistries(targetRegistries) {
+  const additionalRegistries = core.getInput('additional_registries');
+  if (additionalRegistries != null && additionalRegistries.length > 0) {
+    const additionalRegistriesArr = additionalRegistries.split(',');
+    for (let registry of additionalRegistriesArr) {
+      registry = registry.trim();
+      if (!registry.endsWith(':')) {
+        registry += ':';
+      }
+      targetRegistries.push(registry);
+    }
+  }
+}
+
+function base64ToBytes(base64) {
+  const binString = atob(base64);
+  return Uint8Array.from(binString, (m) => m.codePointAt(0));
+}
+
+export function addCiRegistryAuth(ci_registry, registryAuthJson) {
+  if (!core.getBooleanInput('add_ci_registry_auth')) {
+    return;
+  }
+
+  if (ci_registry === false || ci_registry.length <= 0) {
+    console.log(
+      'WARNING: add_ci_registry_auth enabled but ci_registry is not set'
+    );
+    return;
+  }
+
+  if (
+    process.env['CI_REGISTRY_PASSWORD'] == null ||
+    process.env['CI_REGISTRY_PASSWORD'].length > 0
+  ) {
+    console.log(
+      'WARNING: add_ci_registry_auth enabled but CI_REGISTRY_PASSWORD env is empty'
+    );
+    return;
+  }
+
+  registryAuthJson.auths[ci_registry] = base64ToBytes(
+    'token:' + process.env['CI_REGISTRY_PASSWORD']
+  );
+}
+
+export function mergeArgRegistryAuthJson(registryAuthJson) {
+  const argRegistryAuthJson = process.env['REGISTRY_AUTH_JSON'];
+  if (argRegistryAuthJson != null && argRegistryAuthJson.trim().length > 0) {
+    try {
+      const argRegistryAuth = JSON.parse(argRegistryAuthJson);
+      if (argRegistryAuth.auth != null) {
+        for (const key in argRegistryAuth.auth) {
+          if (argRegistryAuth.auth.hasOwnProperty(key)) {
+            registryAuthJson[key] = argRegistryAuth.auth[key];
+          }
+        }
+      }
+    }
+    catch (e) {
+      console.log('Failed to parse registry auth json', e);
+      core.setFailed(error.message);
+      process.exit(1);
+    }
+  }
+}
+
+export function writeRegistryAuthJson(registryAuthJson, path) {
+  fs.writeFileSync(path, JSON.stringify(registryAuthJson, null, 2));
+}
+
+export function collectTags() {
+  const tags          = [];
+  let foundSemverTag  = false;
+  let tagPrefix       = (core.getInput('tag_prefix') ?? '').trim();
+  let tagSuffix       = (core.getInput('tag_suffix') ?? '').trim();
+  let tagCommitPrefix = (core.getInput('tag_suffix') ?? '').trim();
+
+  // handle semver
+  if (
+    core.getBooleanInput('tag_semver_major') &&
+    information.semver_major != null
+  ) {
+    tags.push(tagPrefix + information.semver_major);
+    foundSemverTag = true;
+  }
+  if (
+    core.getBooleanInput('tag_semver_minor') &&
+    information.semver_minor != null
+  ) {
+    tags.push(tagPrefix + information.semver_minor);
+    foundSemverTag = true;
+  }
+  if (
+    core.getBooleanInput('tag_semver_patch') &&
+    information.semver_patch != null
+  ) {
+    tags.push(tagPrefix + information.semver_patch);
+    foundSemverTag = true;
+  }
+
+  // handle git tag/branch
+  if (
+    core.getBooleanInput('tag_ref_normalized_enable') &&
+    foundSemverTag === false
+  ) {
+    if (information.git_tag != null) {
+      // TODO normalize tag from git for docker
+      tags.push(tagPrefix + information.git_tag + tagSuffix);
+    }
+    if (information.git_current_branch != null) {
+      // TODO normalize branch from git for docker
+      tags.push(tagPrefix + information.git_current_branch + tagSuffix);
+    }
+  }
+
+  // handle commit sha
+  if (core.getBooleanInput('tag_commit_enable')) {
+    tags.push(tagPrefix + tagCommitPrefix + github.context.sha + tagSuffix);
+  }
+
+  return tags;
+}
+
+export function prepareDestinations(registries, tags) {
+  const destinations = [];
+  registries.forEach((registry) => {
+    tags.forEach((tag) => {
+      destinations.push(registry + tag);
+    });
+  });
+
+  return destinations;
+}