use temporary file as workaround for calling fpm with arguments

.gitea/workflows/docker-build.yml

@@ -1,27 +0,0 @@
-name: Docker Build
-
-on: push
-
-env:
-  ACTIONS_STEP_DEBUG: "true"
-
-jobs:
-  docker-build:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v3
-
-      - uses: https://gitea.dhswt.de/actions/docker-fix-socket-perm@master
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - uses: https://gitea.dhswt.de/actions/docker@master
-        with:
-          ci_registry_password: ${{ secrets.RELEASE_TOKEN }}
-          docker_multiarch: false # re-enable after development is done
-          docker_context_dir: image/

image/Dockerfile

@@ -1,14 +0,0 @@
-FROM debian:bookworm
-
-RUN apt-get update \
-&&  apt-get install -y \
-      ruby \
-      build-essential \
-      rpm \
-      tar \
-      zip \
-&&  gem install --no-document fpm -v 1.15.1
-
-ADD --chmod=755 entrypoint.sh /entrypoint.sh
-
-ENTRYPOINT ["/entrypoint.sh"]

image/entrypoint.sh

@@ -1,5 +0,0 @@
-#!/usr/bin/env sh
-
-set -e
-
-exec fpm "$@"

package-lock.json

@@ -10,6 +10,7 @@
       "license": "ISC",
       "dependencies": {
         "@actions/core": "^1.10.1",
+        "@actions/exec": "^1.1.1",
         "@actions/github": "^6.0.0",
         "information": "file:../information",
         "js-base64": "^3.7.5"
@@ -7339,6 +7340,14 @@
         "uuid": "^8.3.2"
       }
     },
+    "node_modules/@actions/exec": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@actions/exec/-/exec-1.1.1.tgz",
+      "integrity": "sha512-+sCcHHbVdk93a0XT19ECtO/gIXoxvdsgQLzb2fE2/5sIZmWQuluYyjPQtrtTHdU1YzTZ7bAPN4sITq2xi1679w==",
+      "dependencies": {
+        "@actions/io": "^1.0.1"
+      }
+    },
     "node_modules/@actions/github": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/@actions/github/-/github-6.0.0.tgz",
@@ -7359,6 +7368,11 @@
         "undici": "^5.25.4"
       }
     },
+    "node_modules/@actions/io": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/@actions/io/-/io-1.1.3.tgz",
+      "integrity": "sha512-wi9JjgKLYS7U/z8PPbco+PvTb/nRWjeoFlJ1Qer83k/3C5PHQi28hiVdeE2kHXmIL99mQFawx8qt/JPjZilJ8Q=="
+    },
     "node_modules/@ampproject/remapping": {
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/@ampproject/remapping/-/remapping-2.2.1.tgz",

package.json

@@ -18,6 +18,7 @@
   "license": "ISC",
   "dependencies": {
     "@actions/core": "^1.10.1",
+    "@actions/exec": "^1.1.1",
     "@actions/github": "^6.0.0",
     "information": "file:../information",
     "js-base64": "^3.7.5"

src/action.js

@@ -1,7 +1,7 @@
 import * as core from '@actions/core';
 import * as github from '@actions/github';
 import * as action_information from 'information';
-import {executeFpmBuild, isTrueString, prepareFpmArgs} from './lib';
+import {executeFpmBuild, installFpmViaRuby, isTrueString, prepareFpmArgs} from './lib';
 
 
 try {
@@ -14,6 +14,8 @@ try {
 
   const fpmArgs = prepareFpmArgs();
 
+  await installFpmViaRuby();
+
   executeFpmBuild(fpmArgs, debug);
 }
 catch (error) {

src/lib.js

@@ -1,37 +1,37 @@
 import * as core from '@actions/core';
-import child_process from 'child_process';
+import fs from 'fs';
+
+const exec = require('@actions/exec');
 
 export function prepareFpmArgs() {
   return '';
 }
 
-export function executeFpmBuild(computedFpmArgs, debug) {
+export async function installFpmViaRuby(debug) {
+  const aptCmd = 'sudo apt-get install -y ruby';
+  const gemCmd = 'sudo gem install fpm';
+  if (debug) {
+    console.log('ruby install command: ', rubyCmd);
+  }
+
+  await exec.exec(aptCmd);
+  await exec.exec(gemCmd);
+}
+
+export async function executeFpmBuild(computedFpmArgs, debug) {
 
   const userFpmArgs = core.getInput('fpm_args');
-  const dockerCmd   = 'docker run --rm -i'
-    + ` -v "${process.cwd()}:/workspace/source"`
-    + ' -w /workspace/source'
-    + ' gitea.dhswt.de/actions/fpm:master'
+  const fpmCmd      = 'fpm'
     + ' ' + computedFpmArgs
     + ' ' + userFpmArgs;
 
+  fs.writeFileSync("/tmp/action-fpm-command-bash", fpmCmd);
+
   if (debug) {
-    console.log('docker command: ', dockerCmd);
+    console.log('fpm command: ', fpmCmd);
   }
 
-  const proc = child_process.spawnSync(dockerCmd, {
-    shell: true,
-    stdio: 'inherit',
-    cwd  : process.cwd()
-  });
-
-  if (proc.status != null && proc.status > 0) {
-    throw new Error('fpm build failed');
-  }
-
-  if (proc.error != null) {
-    throw proc.error;
-  }
+  await exec.exec("bash /tmp/action-fpm-command-bash");
 }
 
 function isNonEmptyStr(str) {