diff --git a/Jenkinsfile b/Jenkinsfile
index a7fee27cb..21e4523d5 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -186,7 +186,7 @@ def packageStatic() {
                         sh "mv zerotier-static-${arch} build/zerotier && chmod +x build/zerotier" 
                         sh 'CMAKE_ARGS="-DBUILD_32BIT=1 -DPACKAGE_STATIC=1 -DZT_PACKAGE_FORMAT=RPM" make setup'
                         dir("build") {
-                            sh 'make package'
+                            sh 'make package -j4 VERBOSE=1'
                         }
                         sh "mkdir -p ${distro}"
                         sh "cp -av build/*.rpm ${distro}/"
@@ -217,7 +217,7 @@ def packageStatic() {
                             sh "mv zerotier-static-${arch} build/zerotier && chmod +x build/zerotier" 
                             sh 'CMAKE_ARGS="-DPACKAGE_STATIC=1 -DZT_PACKAGE_FORMAT=RPM" make setup'
                             dir("build") {
-                                sh 'make package'
+                                sh 'make package -j4 VERBOSE=1'
                             }
                             sh "mkdir -p ${distro}"
                             sh "cp -av build/*.rpm ${distro}/"
@@ -262,7 +262,7 @@ def packageStatic() {
                         sh "mv zerotier-static-${arch} build/zerotier && chmod +x build/zerotier" 
                         sh "${cmakeFlags} make setup"
                         dir("build") {
-                            sh 'make package'
+                            sh 'make package -j4 VERBOSE=1'
                         }
                         sh "mkdir -p ${distro}"
                         sh "cp -av build/*.deb ${distro}/"
@@ -306,7 +306,7 @@ def packageStatic() {
                         sh "mv zerotier-static-${arch} build/zerotier && chmod +x build/zerotier" 
                         sh "${cmakeFlags} make setup"
                         dir("build") {
-                            sh 'make package'
+                            sh 'make package -j4 VERBOSE=1'
                         }
                         sh "mkdir -p ${distro}"
                         sh "cp -av build/*.deb ${distro}/"
@@ -349,7 +349,7 @@ def packageStatic() {
                         sh "mv zerotier-static-${arch} build/zerotier && chmod +x build/zerotier" 
                         sh "${cmakeFlags} make setup"
                         dir("build") {
-                            sh 'make package'
+                            sh 'make package -j4 VERBOSE=1'
                         }
                         sh "mkdir -p ${distro}"
                         sh "cp -av build/*.deb ${distro}/"
@@ -397,7 +397,7 @@ def buildDebianNative() {
                     dir("build") {
                         sh "${cmakeFlags} make setup"
                         dir("build") {
-                            sh "make package -j4"
+                            sh "make package -j4 VERBOSE=1"
                         }
                     }
                     sh "mkdir -p ${distro}"
@@ -467,9 +467,9 @@ def buildCentosNative() {
                         }
                         dir ("build") {
                             if (distro == 'centos7' && arch == 'amd64') {
-                                sh 'source scl_source enable devtoolset-8 llvm-toolset-7 && make package -j4'
+                                sh 'source scl_source enable devtoolset-8 llvm-toolset-7 && make package -j4 VERBOSE=1'
                             } else {
-                                sh 'make package -j4'
+                                sh 'make package -j4 VERBOSE=1'
                             }
                         }
                     }
diff --git a/dockerbuild/Dockerfile.debian-bullseye b/dockerbuild/Dockerfile.debian-bullseye
index 887b0c701..dcaef18e2 100644
--- a/dockerbuild/Dockerfile.debian-bullseye
+++ b/dockerbuild/Dockerfile.debian-bullseye
@@ -2,10 +2,10 @@ FROM debian:bullseye-20191224
 
 ARG go_pkg_url
 
-RUN apt-get update && apt-get upgrade -y && apt-get -y install build-essential curl ca-certificates devscripts dh-systemd
+RUN apt-get update && apt-get upgrade -y && apt-get -y install build-essential curl ca-certificates devscripts dh-systemd libssl-devel
 RUN curl -s -k -L https://github.com/Kitware/CMake/releases/download/v3.17.3/cmake-3.17.3.tar.gz -o cmake-3.17.3.tar.gz && tar -xzf cmake-3.17.3.tar.gz
 WORKDIR /cmake-3.17.3
-RUN ./bootstrap && make -j8 && make install
+RUN ./bootstrap --parallel=8 && make -j8 && make install
 WORKDIR /
 
 RUN curl -s -k $go_pkg_url -o go.tar.gz && \