Update Dockerfile to a more recent version

Author: TWiStErRob

Dockerfile

@@ -1,14 +1,24 @@
-FROM debian:8.11
+FROM ubuntu:22.04
 
-RUN apt update && apt install -y \
-    make g++ libapr1-dev libsvn-dev libqt4-dev \
-    git subversion \
-    && rm -rf /var/lib/apt/lists/* \
-    && mkdir /usr/local/svn2git
+# Change locale to let svn handle international characters
+ENV LC_ALL C.UTF-8
 
-ADD . /usr/local/svn2git
+# Install dependencies
+RUN apt-get update && apt-get install --yes --no-install-recommends \
+    build-essential \
+    libapr1-dev \
+    libsvn-dev \
+    qt5-qmake \
+    qtbase5-dev \
+    git \
+    subversion \
+    && rm -rf /var/lib/apt/lists/*
 
+# Build the binary
+RUN mkdir /usr/local/svn2git
+ADD . /usr/local/svn2git
 RUN cd /usr/local/svn2git && qmake && make
 
+# Docker interface
 WORKDIR /workdir
 CMD /usr/local/svn2git/svn-all-fast-export