The is a first cut a providing a Docker container with CPLINT layered on top of Logtalk, all of which will be running under SWI Prolog on a minimal Debian system. It is still quite raw.

Running the images requires connecting to a Docker volume which will provide storage for persistent saved states.

Requirements: a Posix environment with Docker.

Doing "make TARGET", where TARGET may be one of "prolog", "logtalk" or "cplint" will build a Docker image with the name of the target. The resulting image will be based on a minimal Debian (bullseye) system.

To start a container based on one of the images, one may use the Make target: "run-XXX", where XXX is the name of an image to start. This will launch a container based on that image, with the directory $(PWD)/data connected to /root/data in the container. This directory (volume) will be used to store Prolog saved states, which will contain all the relevant bits from the previous session.

Running an image in this way is equivalent to doing (e.g. for cplint):

docker run -ti -v $LOCALDATADIR:/root/data cplint

where $LOCALDATADIR is the path to the volume in the host, e.g. $PWD/data on a macOS or Linux machine to indicate the subdirectory "data" in the current directory.

When running the Prolog session, one may give the goal:

?- save.

which will save the state of the program to a file in the data volume (see above). The effect of this is that whatever was loaded into the Prolog workspace (including foreign libraries and operator definitions) at the time save/0 is called as above, will be used for the next activation of the container (or another container based on the same image.)

There is a variant: the save/1 predicate may be used to indicate a name for the (versioned and restartable) saved state. For example:

?- [library(clpfd)], save(clpfd).

Will save the current workspace, after having consulted the CLP(FD) Prolog library.

To use the newly saved "clpfd" state, one may run the container as follows:

docker run -ti -v $PWD/data:/root/data cplint clpfd

Calling save/0 after having called save/1 will default to using the same name as previously used with save/1.

These are run from a shell. ^D is "Control-D" and stands for the end-of-file char.

1. Make the cplint image:

    15:52:37$ make cplint
    [ -e logtalk_3.39.0-1_all.deb ] || wget -q https://logtalk.org/files/logtalk_3.39.0-1_all.deb
    ln -sf logtalk_3.39.0-1_all.deb logtalk.deb
    docker build prolog --tag prolog:latest
    Sending build context to Docker daemon  2.048kB
    Step 1/3 : FROM debian:bullseye-slim
    bullseye-slim: Pulling from library/debian
    bbd74bee8c69: Pull complete 
    	...
    Removing intermediate container 95a37fe946d3
    ---> 9faebe81644c
    Successfully built 9faebe81644c
    Successfully tagged cplint:latest
    docker tag cplint:latest rodalvas/cplint:latest
    15:53:53$ 
   

2. Run it and do something:

    15:55:45$ docker run -ti -v $PWD/data:/root/data cplint 
    docker.cplint version 0.1 (cplint-2020.07.18-145351)
    ?- p(X).
    ERROR: Unknown procedure: p/1 (DWIM could not correct goal)
    ?- [user].
    |: p(1).
    |: p(2).
    |: ^D
    % user://1 compiled 0.00 sec, 2 clauses
    true.
   
    ?- p(X).
    X = 1 ;
    X = 2.
   
    ?- save.
    % Disabled autoloading (loaded 0 files)
    saved docker.cplint version 0.1 (cplint-2020.07.18-145623)
    true.
   
    ?- ^D
   
    15:56:26$ 
   

3. Resume the session, from we left off:

    15:58:13$ docker run -ti -v $PWD/data:/root/data cplint 
    docker.cplint version 0.1 (cplint-2020.07.18-145623)
    ?- p(X).
    X = 1 ;
    X = 2.
   
    ?- ^D
   
    15:58:21$ 
   

4. Starting from cplint, make a version which extends it with CLP(FD):

    15:58:21$ docker run -ti -v $PWD/data:/root/data cplint 
    docker.cplint version 0.1 (cplint-2020.07.18-145623)
    ?- [library(clpfd)].
    true.
   
    ?- X #< 10.
    X in inf..9.
   
    ?- save(clpfd).
    % Disabled autoloading (loaded 0 files)
    saved docker.clpfd version 0.1 (clpfd-2020.07.18-145935)
    true.
   
    ?- ^D
   
    15:59:41$ 
    15:59:43$ docker run -ti -v $PWD/data:/root/data cplint clpfd
    docker.clpfd version 0.1 (clpfd-2020.07.18-145935)
    ?- X #> 8.
    X in 9..sup.
   
    ?- ^D
   
    15:59:54$ 
   

At present, there is an unresolved interference between CPLINT and Logtalk which may cause some occasional glitches.