feat(docker): update to Ubuntu 20.04 LTS (#5855)

docker/base/Dockerfile

@@ -1,4 +1,4 @@
-FROM buildpack-deps:bionic-curl
+FROM buildpack-deps:focal-curl
 
 ENV DEBIAN_FRONTEND noninteractive
 
@@ -9,9 +9,9 @@ RUN apt-get -qq update && apt-get -qq dist-upgrade && \
   # git ssh for using as docker image on CircleCI
   # python for node-gyp
   # rpm is required for FPM to build rpm package
-  # libsecret-1-dev and libgnome-keyring-dev are required even for prebuild keytar
-  apt-get -qq install --no-install-recommends qtbase5-dev bsdtar build-essential autoconf libssl-dev gcc-multilib g++-multilib lzip rpm python libcurl4 git git-lfs ssh unzip \
-  libsecret-1-dev libgnome-keyring-dev \
+  # libsecret-1-dev is required even for prebuild keytar (https://atom.github.io/node-keytar/)
+  apt-get -qq install --no-install-recommends qtbase5-dev build-essential autoconf libssl-dev gcc-multilib g++-multilib lzip rpm python libcurl4 git git-lfs ssh unzip \
+  libsecret-1-dev \
   libopenjp2-tools && \
   # git-lfs
   git lfs install && \

docker/build.sh

@@ -1,10 +1,10 @@
 #!/usr/bin/env bash
 set -e
 
-docker build -t electronuserland/builder:base -t electronuserland/builder:base-06.19 docker/base
+docker build -t electronuserland/builder:base -t electronuserland/builder:base-05.21 docker/base
 
-docker build -t electronuserland/builder:12 -t electronuserland/builder:latest -t electronuserland/builder:12-06.19 docker/node
+docker build -t electronuserland/builder:14 -t electronuserland/builder:latest -t electronuserland/builder:14-05.21 docker/node
 
 docker build -t electronuserland/builder:wine docker/wine
 docker build -t electronuserland/builder:wine-mono docker/wine-mono
-docker build -t electronuserland/builder:wine-chrome docker/wine-chrome
+docker build -t electronuserland/builder:wine-chrome docker/wine-chrome

docker/wine-mono/Dockerfile

@@ -3,5 +3,5 @@ FROM electronuserland/builder:wine
 # since mono is required only for deprecated target Squirrel.Windows, extracted to separate docker image to reduce size
 
 RUN apt-get update -y && \
-  apt-get install -y --no-install-recommends mono-devel ca-certificates-mono tzdata && \
-  apt-get clean && rm -rf /var/lib/apt/lists/*
+  apt-get install -y --no-install-recommends mono-devel ca-certificates-mono && \
+  apt-get clean && rm -rf /var/lib/apt/lists/*

docker/wine/Dockerfile

@@ -1,13 +1,12 @@
 FROM electronuserland/builder:latest
 
-RUN apt-get update && apt-get install -y --no-install-recommends software-properties-common && dpkg --add-architecture i386 && \
-  curl -L https://download.opensuse.org/repositories/Emulators:/Wine:/Debian/xUbuntu_18.04/Release.key > winehq.key && apt-key add winehq.key && \
-  apt-add-repository 'deb https://download.opensuse.org/repositories/Emulators:/Wine:/Debian/xUbuntu_18.04/ ./' && \
+RUN dpkg --add-architecture i386 && \
+  curl -Lo /usr/share/keyrings/winehq.asc https://dl.winehq.org/wine-builds/winehq.key && \
+  echo 'deb [signed-by=/usr/share/keyrings/winehq.asc] https://dl.winehq.org/wine-builds/ubuntu/ focal main' > /etc/apt/sources.list.d/winehq.list && \
   apt-get update && \
-  apt-get -y purge software-properties-common libdbus-glib-1-2 python3-dbus python3-gi python3-pycurl python3-software-properties && \
   apt-get install -y --no-install-recommends winehq-stable && \
   # clean
-  apt-get clean && rm -rf /var/lib/apt/lists/* && unlink winehq.key
+  apt-get clean && rm -rf /var/lib/apt/lists/*
 
 RUN curl -L https://github.com/electron-userland/electron-builder-binaries/releases/download/wine-2.0.3-mac-10.13/wine-home.zip > /tmp/wine-home.zip && unzip /tmp/wine-home.zip -d /root/.wine && unlink /tmp/wine-home.zip