Containerize the pict tool (#114)

Signed-off-by: Andrej Podhradsky <apodhrad@redhat.com>

Containerfile

+#  ____        _ _     _           
+# | __ ) _   _(_) | __| | ___ _ __ 
+# |  _ \| | | | | |/ _` |/ _ \ '__|
+# | |_) | |_| | | | (_| |  __/ |   
+# |____/ \__,_|_|_|\__,_|\___|_|   
+#                                  
+FROM registry.access.redhat.com/ubi9/toolbox:9.2 as builder
+
+# This will be used in ubi-micro
+RUN dnf --installroot=/tmp/ubi-micro \
+        --nodocs --setopt=install_weak_deps=False \
+        install -y \
+        g++ shadow-utils && \
+    dnf --installroot=/tmp/ubi-micro \
+        clean all
+
+# This is needed to build pict
+RUN dnf install -y cmake g++ && \
+    mkdir /tmp/pict
+
+# Copy repo resources
+COPY ./ /tmp/pict/
+
+# Build the pict
+RUN cd /tmp/pict/ && \
+    rm -rf build && \
+    cmake -DCMAKE_BUILD_TYPE=Release -S . -B build && \
+    cmake --build build && \
+    cp build/cli/pict /tmp/ubi-micro/usr/local/bin/
+
+#  __  __       _       
+# |  \/  | __ _(_)_ __  
+# | |\/| |/ _` | | '_ \ 
+# | |  | | (_| | | | | |
+# |_|  |_|\__,_|_|_| |_|
+#
+FROM registry.access.redhat.com/ubi9/ubi-micro:9.2
+
+COPY --from=builder /tmp/ubi-micro/ /
+
+VOLUME /var/pict
+
+WORKDIR /var/pict
+
+RUN useradd -M pict
+
+USER pict
+
+ENTRYPOINT ["pict"]

Makefile

@@ -16,6 +16,7 @@ OBJS_CLI = cli/ccommon.o cli/cmdline.o
 OBJS_CLI += cli/common.o cli/cparser.o cli/ctokenizer.o cli/gcd.o
 OBJS_CLI += cli/gcdexcl.o cli/gcdmodel.o cli/model.o cli/mparser.o
 OBJS_CLI += cli/pict.o cli/strings.o
+IMAGE := pict:latest
 
 pict: $(OBJS)
 	$(CXX) $(OBJS) -o $(TARGET)
@@ -35,3 +36,9 @@ source: clean
 	git archive --prefix="pict-$(COMMIT)/" -o "pict-$(SHORT_COMMIT).tar.gz" $(COMMIT)
 
 .PHONY: all test clean source
+
+image-build:
+	@podman build --layers=true -t $(IMAGE) .
+
+image-run:
+	@podman run -it --rm -v ./doc/sample-models:/var/pict:Z $(IMAGE) create_volume.txt

README.md

@@ -54,3 +54,18 @@ Assuming installation of CMake and C++ toolchain, following set of commands will
 ## Debugging
 
 Most commonly, you will want to debug the command-line tool. Start in the **pictcli** project, **cli/pict.cpp** file. You'll find **wmain** routine there which would be a convenient place to put the very first breakpoint.
+
+## PICT as a container
+
+To build a container image with PICT, just execute
+
+    make image-build
+
+Once built, you can run it with a sample model as follows
+
+    make image-run
+
+To use your own models, please execute
+
+    podman run -it --rm -v ./<local-dir>:/var/pict:Z pict:latest <your-model-file> [<pict-options>]
+