Fix build & compile skia from source

Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:20.04
+FROM python
 
 #Required for tzdata
 ENV TZ=Europe/Amsterdam
@@ -9,12 +9,13 @@ RUN apt-get update
 RUN apt-get upgrade -y
 RUN apt-get install -y git unzip curl build-essential cmake ninja-build libx11-dev libxcursor-dev libxi-dev libgl1-mesa-dev libfontconfig1-dev
 
+COPY compile.sh /
+
 VOLUME /dependencies
 VOLUME /output
 
 WORKDIR /output
 
-COPY compile.sh /
-
 RUN ["chmod", "+x", "/compile.sh"]
+
 ENTRYPOINT ["/compile.sh"]

README.md

@@ -4,7 +4,12 @@ This repository allows you to compile Aseprite without installing any build tool
 
 After spending hours trying to get Aseprite to compile, I decided to just make a Docker image for it 
 
-To simplify and speed up the build process, the build script uses the precompiled version of Skia, which it downloads from the Github repo.
+Currently the script checks out Skia version `m96` and Aseprite version `1.2.34.1`. You can easily change this in `compile.sh` by changing the `-b` flag to the desired versions.
+
+If any of the folders of the projects folder isn't empty, the script will skip checking out the latest versions. In order to re-download, delete the according folder.
+* ./dependencies/depot_tools
+* ./dependencies/skia
+* ./output/aseprite
 
 ## Usage
  * Install docker
@@ -12,5 +17,6 @@ To simplify and speed up the build process, the build script uses the precompile
  * cd into cloned repository
  * Run `docker-compose build`
  * Run `docker-compose up`
+ * Grab a cup of coffee, since this can take quite a while (Compiling build deps, skia, and aseprite)
 
 You can now find the compiled version of Aseprite in the `output/aseprite/build/bin` folder

compile.sh

@@ -1,16 +1,45 @@
 #!/bin/bash
 
-# Download Skia
+# Fail on errors
-if [ ! -d "/dependencies/skia" ]
+set -e
+
+echo "Download and compile Skia & other dependencies"
+cd /dependencies
+
+if [ ! -d "/dependencies/depot_tools" ]
 then
-  curl -L https://github.com/aseprite/skia/releases/download/m96-2f1f21b8a9/Skia-Linux-Release-x64.zip --output /dependencies/skia.zip
+  git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
-  unzip /dependencies/skia.zip -d /dependencies/skia
+fi
+
+if [ ! -d "/dependencies/skia" ]
+then
+  git clone -b aseprite-m96 https://github.com/aseprite/skia.git
+fi
+
+export PATH="${PWD}/depot_tools:${PATH}"
+
+cd skia
+pwd
+echo "Syncing skia dependencies"
+python3 tools/git-sync-deps
+
+echo "Compiling skia"
+gn gen out/Release-x64 --args="is_debug=false is_official_build=true skia_use_system_expat=false skia_use_system_icu=false skia_use_system_libjpeg_turbo=false skia_use_system_libpng=false skia_use_system_libwebp=false skia_use_system_zlib=false skia_use_sfntly=false skia_use_freetype=true skia_use_harfbuzz=true skia_pdf_subset_harfbuzz=true skia_use_system_freetype2=false skia_use_system_harfbuzz=false"
+ninja -C out/Release-x64 skia modules
+
+echo "Download Aseprite and compile"
+cd /output
+
+if [ ! -d "/output/aseprite" ]
+then
+  git clone -b v1.2.34.1 --recursive https://github.com/aseprite/aseprite.git
 fi
 
-git clone --recursive https://github.com/aseprite/aseprite.git
 cd aseprite
 mkdir -p build
 cd build
+
+echo "Compiling Asperite"
 cmake \
   -DCMAKE_BUILD_TYPE=RelWithDebInfo \
   -DLAF_BACKEND=skia \
@@ -19,4 +48,6 @@ cmake \
   -DSKIA_LIBRARY=/dependencies/skia/out/Release-x64/libskia.a \
   -G Ninja \
   ..
+
+echo "Linking Aseprite"
 ninja aseprite

docker-compose.yml

@@ -4,5 +4,5 @@ services:
   installer:
     build: .
     volumes:
-    - ./output:/output
+    - "./output:/output:rw"
-    - ./dependencies:/dependencies
+    - "./dependencies:/dependencies:rw"