up readme about docker

Author: olegantonyan

Dockerfile

@@ -1,24 +1,6 @@
 FROM opensuse/tumbleweed
 
-RUN zypper up -y && \
-    zypper in -y ruby podman
-
+RUN zypper up -y && zypper in -y ruby podman
 COPY . /app
 RUN ln -s /app/exe/* /usr/bin/
 WORKDIR /app
-
-#RUN bundle config --local without development test && \
-#    bundle config set deployment true && \
-#    bundle install
-
-#RUN mkdir -p /etc/containers
-#RUN cat <<'EOF' > /etc/containers/containers.conf
-#[engine]
-#cgroup_manager = "none"
-#runtime = "runc"
-#EOF
-
-
-# docker build -t omnipackage-agent .
-
-# docker run --rm -it --privileged --cgroupns=host -v /run/media/oleg/c3996ce0-a379-4403-9d64-7d4c0536463f/dev/omnipackage-build/:/tmp -v /home/oleg/projects/mpz:/project omnipackage-agent omnipackage build /project

README.md

@@ -10,12 +10,28 @@ Agent is responsible for building packages. It contains 2 executables:
 
 ## Installation
 
-Use repositories provided by OmniPackage itself: 
+Use repositories provided by OmniPackage itself:
 
 https://web.omnipackage.org/oleg/omnipackage-agent
 
 Or just clone this repo and run  `exe/omnipackage` or `exe/omnipackage-agent` directly. Ruby 3.0 or higher required.
 
+### In Docker
+
+Not recommended especially in production since it requires `--privileged` flag to run containers inside.
+
+To build an image run:
+```
+docker build -t omnipackage-agent .
+```
+
+Use it to build a project:
+```
+docker run --rm -it --privileged --cgroupns=host -v /tmp/build/:/tmp -v /path/to/project:/project omnipackage-agent omnipackage build /project
+```
+
+Change `/tmp/build/` to your desired host build directory, and `/path/to/project` to where the target project is located.
+
 ## Usage
 
-Refer to [docs.omnipackage.org](https://docs.omnipackage.org/)
+Refer to [docs.omnipackage.org](https://docs.omnipackage.org/)