Various fixes changing from .gz to .xz

Author: FrankRuben

Dockerfile

@@ -33,8 +33,8 @@ RUN mkdir -p /usr/src/aiscm
 WORKDIR /usr/src/aiscm
 ADD debian/control debian/control
 RUN mk-build-deps --install --remove --tool 'apt-get -q --yes' debian/control
-COPY aiscm.tar.gz .
-COPY aiscm.tar.gz.asc .
+COPY aiscm.tar.xz .
+COPY aiscm.tar.xz.asc .
 ADD configure.ac .
 ADD debian debian
 ADD Makefile.package .

Makefile.package

@@ -2,10 +2,10 @@ VERSION=$(shell grep AC_INIT configure.ac | sed -e "s/.*\[\([0-9\.]*\)\].*/\1/")
 
 # https://wiki.debian.org/IntroDebianPackaging
 # https://en.opensuse.org/openSUSE:Build_Service_Tutorial
-package: aiscm.tar.gz aiscm.tar.gz.asc
+package: aiscm.tar.xz aiscm.tar.xz.asc
 	mkdir -p pkg
-	cp aiscm.tar.gz pkg/aiscm_$(VERSION).orig.tar.gz
-	cp aiscm.tar.gz.asc pkg/aiscm_$(VERSION).orig.tar.gz.asc
-	tar xzf aiscm.tar.gz -C pkg
+	cp aiscm.tar.xz pkg/aiscm_$(VERSION).orig.tar.xz
+	cp aiscm.tar.xz.asc pkg/aiscm_$(VERSION).orig.tar.xz.asc
+	tar xf aiscm.tar.xz -C pkg
 	cp -a debian pkg/aiscm-$(VERSION)
 	cd pkg/aiscm-$(VERSION) && debuild -us -uc -j4 && cd ../..

README.md

@@ -67,6 +67,38 @@ sudo make install
 cd ..
 ```
 
+### Installation using Docker
+
+Download the `.tar.xz` and the `.tar.xz.asc` files from the
+lastest [release](https://github.com/wedesoft/aiscm/releases) into the root folder of the cloned repository, then rename
+the files to `aiscm.tar.gz` and `aiscm.tar.gz.asc`, respectively.
+
+Build the Docker image using the command below, where the second line just display some minimal information about the
+image. Note that the Docker build will take *some* time.
+
+```Shell
+docker build --tag=aiscm .
+docker image ls aiscm
+```
+
+Now can can start a shell within your running container using:
+
+```Shell
+docker run -w /usr/src/aiscm/pkg/aiscm-{release-number} -it aiscm /bin/bash
+# e.g.: docker run -w /usr/src/aiscm/pkg/aiscm-0.18.1 -it aiscm /bin/bash
+```
+
+Within the `tests` folder, you'll find that all unit tests have already been run; you might also have seen the
+respective log output during `docker build`. Integration tests are not yet completely running within Docker, but you can
+e.g. run one using:
+
+```Shell
+cd tests/integration/
+make 2d_array.tmp
+```
+
+See below for more information on running the tests.
+
 ## Run tests
 
 ### Unit tests