feat: add container + nfpm utilities

vars/nfpm.groovy

@@ -0,0 +1,25 @@
+// Package project with nfpm
+// See https://nfpm.goreleaser.com/
+def package(Map options = [:]) {
+    String installDir = options.get("nfpmInstallDir", "/usr/local/bin")
+    String nfpmVersion = options.get("nfpmVersion", "2.15.1")
+    String nfpmForceDownload = options.get("nfpmForceDownload", false)
+    String nfpmDownloadUrl = options.get("nfpmDownloadUrl", "https://github.com/goreleaser/nfpm/releases/download/${nfpmVersion}/nfpm_${nfpmVersion}_Linux_x86_64.tar.gz")
+    String nfpmConfig = options.get("nfpmConfig", "nfpm.yaml")
+    String nfpmTarget = options.get("nfpmTarget", ".")
+    String nfpmPackager = options.get("nfpmPackager", "")
+
+    String nfpmBin = sh(returnStdout: true, script: 'which nfpm').trim("")
+    if (nfpmBin == "" || nfpmForceDownload) {
+        sh("""
+        mkdir -p '${installDir}'
+        curl -L '${nfpmDownloadUrl}' > /tmp/nfpm.tar.gz
+        tar -C /usr/local/bin -xzf /tmp/nfpm.tar.gz
+        """)
+    }
+
+    sh("""
+        export PATH='${installDir}:${env.PATH}'
+        nfpm --config '${nfpmConfig}' ${nfpmPackager ? "--packager "+nfpmPackager : ""} --target '${nfpmTarget}'
+    """)
+}