Add support for Docker. New targets: docker,dockerbuild,dockerrun,dockerpoc and dockerclean.

Add the poc target as well.

Dockerfile

@@ -0,0 +1,13 @@
+FROM alpine
+RUN apk update
+# Copy everything, except executables listed in .dockerignore
+COPY . /octopus
+WORKDIR /octopus
+# Install runtime dependencies
+RUN apk add --no-cache make git openssh-client-default util-linux-misc util-linux-dev
+# Install build dependencies, compile and uninstall dependencies
+RUN apk add --no-cache --virtual build-dependencies gcc clang musl-dev lld coreutils \
+	&& make -j$(nproc) build \
+	&& apk del build-dependencies
+# Run all experiment per default
+CMD make all