From a4cb4f7c9621df850827c7b48133c2162af16a14 Mon Sep 17 00:00:00 2001
From: Mark Wong <markwkm@gmail.com>
Date: Fri, 11 Jun 2021 13:11:28 -0700
Subject: Add Docker file and script to build AppImage

---
 CMakeLists.txt          | 32 ++++++++++++++++++++++++++++++++
 Dockerfile.appimage     | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 HISTORY.rst             |  5 +++++
 Makefile                |  7 ++++++-
 docker/README           |  4 ++++
 docker/appimage-build   | 26 ++++++++++++++++++++++++++
 docker/appimage-prepare | 14 ++++++++++++++
 7 files changed, 135 insertions(+), 1 deletion(-)
 create mode 100644 Dockerfile.appimage
 create mode 100644 docker/README
 create mode 100755 docker/appimage-build
 create mode 100755 docker/appimage-prepare

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b4cf66e..508d020 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -395,3 +395,35 @@ add_custom_target(appimage
             `ldd pg_top | grep libselinux.so | cut -d \" \" -f 3` AppDir/usr/lib
     COMMAND VERSION=${PROJECT_VERSION} appimagetool-${ARCH}.AppImage AppDir
 )
+
+add_custom_target(appimage-docker
+    COMMAND cp -aL ${CMAKE_SOURCE_DIR}/AppRun AppDir
+    COMMAND cp -aL ${CMAKE_SOURCE_DIR}/pg_top.desktop AppDir
+    COMMAND cp -aL ${CMAKE_SOURCE_DIR}/pg_top.png AppDir
+    COMMAND mkdir -p AppDir/usr/share/metainfo
+    COMMAND cp -aL ${CMAKE_SOURCE_DIR}/pg_top.appdata.xml AppDir/usr/share/metainfo
+    COMMAND mkdir -p AppDir/usr/lib
+    COMMAND cp -aL
+            `ldd pg_top | grep libpq.so | cut -d \" \" -f 3` AppDir/usr/lib
+    COMMAND cp -aL
+            `ldd pg_top | grep libtinfo.so | cut -d \" \" -f 3` AppDir/usr/lib
+    COMMAND cp -aL
+            `ldd pg_top | grep libbsd.so | cut -d \" \" -f 3` AppDir/usr/lib
+    COMMAND cp -aL
+            `ldd pg_top | grep libssl.so | cut -d \" \" -f 3` AppDir/usr/lib
+    COMMAND cp -aL
+            `ldd pg_top | grep libcrypto.so | cut -d \" \" -f 3` AppDir/usr/lib
+    COMMAND cp -aL
+            `ldd pg_top | grep libgssapi_krb5.so | cut -d \" \" -f 3` AppDir/usr/lib
+    COMMAND cp -aL
+            `ldd pg_top | grep libkrb5.so | cut -d \" \" -f 3` AppDir/usr/lib
+    COMMAND cp -aL
+            `ldd pg_top | grep libk5crypto.so | cut -d \" \" -f 3` AppDir/usr/lib
+    COMMAND cp -aL
+            `ldd pg_top | grep libkrb5support.so | cut -d \" \" -f 3` AppDir/usr/lib
+    COMMAND cp -aL
+            `ldd pg_top | grep libkeyutils.so | cut -d \" \" -f 3` AppDir/usr/lib
+    COMMAND cp -aL
+            `ldd pg_top | grep libselinux.so | cut -d \" \" -f 3` AppDir/usr/lib
+    COMMAND VERSION=${PROJECT_VERSION} /usr/local/squashfs-root/AppRun --comp=xz AppDir
+)
diff --git a/Dockerfile.appimage b/Dockerfile.appimage
new file mode 100644
index 0000000..dd7a460
--- /dev/null
+++ b/Dockerfile.appimage
@@ -0,0 +1,48 @@
+# Build an environment for creating an AppImage.
+
+# Use a distro with an old libc to maximize support on as many linux distros as
+# possible.
+FROM centos:6
+
+# CentOS 6 is EOL so update the repo config to use the CentOS vault.  6.10 is
+# the final version.
+RUN sed -i 's/enabled=1/enabled=0/' /etc/yum/pluginconf.d/fastestmirror.conf
+RUN sed -i 's/mirrorlist/#mirrorlist/' /etc/yum.repos.d/*.repo
+RUN sed -i 's|#baseurl=http://mirror.centos.org/centos/$releasever|baseurl=https://vault.centos.org/6.10|' /etc/yum.repos.d/*.repo
+
+RUN yum -y update
+RUN yum -y install epel-release
+RUN yum -y update
+RUN yum -y install cmake \
+                   bison \
+                   flex \
+                   gcc \
+                   libbsd-devel \
+                   make \
+                   ncurses-devel \
+                   openssl-devel \
+                   xz
+
+WORKDIR /usr/local
+# Release 12 is the latest that will run on CentOS 6.
+RUN curl -OL https://github.com/AppImage/AppImageKit/releases/download/12/appimagetool-x86_64.AppImage
+RUN chmod +x appimagetool-x86_64.AppImage
+RUN ./appimagetool-x86_64.AppImage --appimage-extract
+RUN chmod 0755 squashfs-root
+RUN chmod 0755 squashfs-root/usr
+RUN chmod 0755 squashfs-root/usr/bin
+RUN chmod 0755 squashfs-root/usr/lib
+RUN chmod 0755 squashfs-root/usr/lib/appimagekit
+RUN chmod 0755 squashfs-root/usr/share
+
+WORKDIR /usr/local/src
+
+# PostgreSQL 10 is the first release supporting multiple hosts in the
+# connection string.
+RUN curl -OL https://ftp.postgresql.org/pub/source/v10.17/postgresql-10.17.tar.bz2
+RUN tar xvf postgresql-10.17.tar.bz2
+WORKDIR /usr/local/src/postgresql-10.17
+RUN ./configure --without-ldap --without-readline --without-zlib \
+    --without-gssapi --with-openssl --prefix=/usr
+RUN make install
+RUN ldconfig
diff --git a/HISTORY.rst b/HISTORY.rst
index e46db03..a6ff715 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -1,6 +1,11 @@
 Release Notes
 =============
 
+YYYY-MM-DD v4.0.1
+-----------------
+
+* Add Docker files for creating an AppImage
+
 2020-08-05 v4.0.0
 -----------------
 
diff --git a/Makefile b/Makefile
index 2ba1495..07a7811 100644
--- a/Makefile
+++ b/Makefile
@@ -3,13 +3,18 @@ default:
 
 UNAME_S := $(shell uname -s)
 
-appimage:
+appimage-prep:
 	cmake -H. -Bbuild/appimage -DCMAKE_INSTALL_PREFIX=/usr
 	cd build/appimage && make
 	cd build/appimage && sed -i -e 's#/usr#././#g' pg_top
 	cd build/appimage && make install DESTDIR=AppDir
+
+appimage: appimage-prep
 	cd build/appimage && make appimage
 
+appimage-docker: appimage-prep
+	cd build/appimage && make appimage-docker
+
 clean:
 	-rm -rf build
 
diff --git a/docker/README b/docker/README
new file mode 100644
index 0000000..3f6947e
--- /dev/null
+++ b/docker/README
@@ -0,0 +1,4 @@
+This is a collection of scripts to use Docker for specific tasks:
+
+* appimage-prepare - Build a Docker image to use for creating an AppImage.
+* appimage-build - Create an AppImage for pg_top.
diff --git a/docker/appimage-build b/docker/appimage-build
new file mode 100755
index 0000000..e094692
--- /dev/null
+++ b/docker/appimage-build
@@ -0,0 +1,26 @@
+#!/bin/sh
+
+which docker > /dev/null 2>&1
+if [ $? -ne 0 ]; then
+	echo "docker is not in your path"
+	exit 1
+fi
+
+DOCKER_DIR=`dirname $0`
+DOCKER_DIR=`readlink -f $DOCKER_DIR`
+
+DOCKER_TAG="pg_top-appimage"
+
+# Use the return code from `docker inspect` to determine if the docker image
+# needs to be created.
+docker inspect $DOCKER_TAG > /dev/null
+if [ $? -ne 0 ]; then
+	${DOCKER_DIR}/appimage-prepare || exit 1
+fi
+
+UID=`id -u`
+GID=`id -g`
+
+docker run --rm -v ${DOCKER_DIR}/..:/usr/local/src/pg_top:rw \
+		-w /usr/local/src/pg_top -u ${UID}:${GID} $DOCKER_TAG \
+		make appimage-docker
diff --git a/docker/appimage-prepare b/docker/appimage-prepare
new file mode 100755
index 0000000..8e1ae76
--- /dev/null
+++ b/docker/appimage-prepare
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+which docker > /dev/null 2>&1
+if [ $? -ne 0 ]; then
+	echo "docker is not in your path"
+	exit 1
+fi
+
+DOCKER_DIR=`dirname $0`
+DOCKER_DIR=`readlink -f $DOCKER_DIR`
+
+DOCKER_TAG="pg_top-appimage"
+
+(cd $DOCKER_DIR/.. && docker build -t $DOCKER_TAG -f Dockerfile.appimage .)
-- 
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