diff --git a/docker/lmk.devuan-chimaera.rc b/docker/lmk.devuan-chimaera.rc
index 8c876a0..9a50ecb 100644
--- a/docker/lmk.devuan-chimaera.rc
+++ b/docker/lmk.devuan-chimaera.rc
@@ -1,12 +1,13 @@
 container_name="finetest-devuan-chimaera-lmk"
-library_image="linux-minetest-kit/libraries-devuan-chimaera"
-docker_finetest_server_image_name="linux-minetest-kit/server-finetest-devuan-chimaera"
-# ^ This must match the one used in the "FROM" statement in server-finetest-devuan-chimaera/Dockerfile
+libraries_image="linux-minetest-kit/libraries-devuan-chimaera"
+server_image_dir="server-finetest-devuan-chimaera"
+server_image="linux-minetest-kit/server-finetest-devuan-chimaera"
+# ^ formerly server_finetest_image
+# ^ This must match the one used in the "FROM" statement in $server_image_dir/Dockerfile
 # client_classic_image=linux-minetest-kit/client-classic
-server_finetest_image="linux-minetest-kit/server-finetest-devuan-chimaera"
 # client_classic_container="minetest-client-classic"
-server_container="minetestserver-finetest"
-docker_libraries_image_dir="libraries-devuan-chimaera"
-docker_finetest_server_image_dir="server-finetest-devuan-chimaera"
-container_build_blob=$docker_libraries_image_dir/linux-minetest-kit.zip
+# server_container="minetestserver-finetest"
+# ^ deprecated since: Only container_name is necessary since there is no container based on libraries_image--a libraries container is not necessary since Dockerfile builds the libraries now.
+libraries_image_dir="libraries-devuan-chimaera"
+libraries_image_build_blob=$libraries_image_dir/linux-minetest-kit.zip
 prerelease_path=~/Downloads/minetest.org/insider-prerelease/linux-minetest-kit-220509.zip
diff --git a/docker/lmk.devuan-chimaera.sh b/docker/lmk.devuan-chimaera.sh
index 272afa6..9b17824 100755
--- a/docker/lmk.devuan-chimaera.sh
+++ b/docker/lmk.devuan-chimaera.sh
@@ -20,23 +20,28 @@ END
 fi
 # container_name="linux-minetest-kit-build-libraries-devuan-chimaera"
 # ^ This is no longer necessary since the IMAGE does the building (build was moved to Dockerfile)
-source lmk.devuan-chimaera.rc
+this_rc="lmk.devuan-chimaera.rc"
+if [ ! -f "$this_rc" ]; then
+    echo "Error: $0 must run in the directory containing $this_rc."
+    exit 1
+fi
+source $this_rc
 if [ $? -ne 0 ]; then exit 1; fi
-if [ ! -d "$docker_libraries_image_dir" ]; then
-    echo "* $0 must run from the directory containing the container image directory: $docker_libraries_image_dir"
+if [ ! -d "$libraries_image_dir" ]; then
+    echo "Error: $0 must run from the directory containing the container image directory: $libraries_image_dir"
     exit 1
 fi
-# ^ docker_libraries_image_dir has to be in the same directory as Dockerfile or
+# ^ libraries_image_dir has to be in the same directory as Dockerfile or
 #   the COPY command in the Dockerfile won't work.
 
-source $docker_libraries_image_dir/lmk.rc
+source $libraries_image_dir/lmk.rc
 if [ $? -ne 0 ]; then
     exit 1
 fi
 
 if [ "@$DL_SRC_PATH" = "@" ]; then
     # DL_SRC_PATH="$HOME/Downloads/$DL_SRC_NAME"
-    DL_SRC_PATH="$docker_libraries_image_dir"
+    DL_SRC_PATH="$libraries_image_dir"
     # ^ $DL_SRC_PATH has to be in the same directory as Dockerfile or
     #   the COPY command in the Dockerfile won't work.
     #   The file should be added to .gitignore for the reason that it
@@ -44,54 +49,55 @@ if [ "@$DL_SRC_PATH" = "@" ]; then
 fi
 
 
-# sudo docker image inspect $library_image > /dev/null
-sudo docker image inspect $library_image --format "* docker is looking for the image..."
+# sudo docker image inspect $libraries_image > /dev/null
+sudo docker image inspect $libraries_image --format "* docker is looking for the image..."
 # ^ appending ":latest" to the name also works.
 # ^ Get matching images as a JSON list (where each has "Id" and other
 #   metadata).
 if [ $? -ne 0 ]; then
-    if [ ! -d "$docker_libraries_image_dir" ]; then
-        echo "Error: \"$docker_libraries_image_dir\" (docker_libraries_image_dir for storing $SRC_URL) doesn't exist in \"`pwd`\"."
+    if [ ! -d "$libraries_image_dir" ]; then
+        echo "Error: \"$libraries_image_dir\" (libraries_image_dir for storing $SRC_URL) doesn't exist in \"`pwd`\"."
         exit 1
     fi
 
-    echo "* building image $library_image..."
-    if [ ! -f "$container_build_blob" ]; then
+    echo "* building image $libraries_image..."
+    if [ ! -f "$libraries_image_build_blob" ]; then
         echo "* downloading $SRC_URL to $DL_SRC_PATH..."
         curl "$SRC_URL" --progress-bar --output "$DL_SRC_PATH"
         if [ $? -ne 0 ]; then
             exit 1
         fi
-        if [ ! -f "$container_build_blob" ]; then
-            echo "Error: This script requires \"$container_build_blob\"."
+        if [ ! -f "$libraries_image_build_blob" ]; then
+            echo "Error: This script requires \"$libraries_image_build_blob\"."
             exit 1
         fi
     else
-        echo "* using existing \"$container_build_blob\" to build the container image"
+        echo "* using existing \"$libraries_image_build_blob\" to build the container image"
     fi
-    cp ../install-minetest-build-deps.sh $docker_libraries_image_dir/
+    cp ../install-minetest-build-deps.sh $libraries_image_dir/
     # ^ This copy of it is in .gitignore.
     if [ $? -ne 0 ]; then
-        echo "Error: 'cp ../install-minetest-build-deps.sh $docker_libraries_image_dir/' failed."
+        echo "Error: 'cp ../install-minetest-build-deps.sh $libraries_image_dir/' failed."
         exit 1
     fi
     move_back="false"
-    if [ ! -f $container_build_blob ]; then
+    if [ ! -f $libraries_image_build_blob ]; then
         if [ -f "$prerelease_path" ]; then
             move_back="true"
-            echo "mv $prerelease_path $container_build_blob"
-            mv $prerelease_path $container_build_blob
+            echo "mv $prerelease_path $libraries_image_build_blob"
+            mv $prerelease_path $libraries_image_build_blob
             if [ $? -ne 0 ]; then
                 echo "* Error: the mv command failed."
                 exit 1
             fi
         fi
     fi
-    sudo docker build -t $library_image $docker_libraries_image_dir
+    sudo docker build -t $libraries_image $libraries_image_dir
+    # -t: Name and optionally a tag in the 'name:tag' format
     code=$?
     if [ "@move_back" = "@true" ]; then
-        echo "mv \"$prerelease_path\" \"$container_build_blob\""
-        mv "$container_build_blob" "$prerelease_path"
+        echo "mv \"$prerelease_path\" \"$libraries_image_build_blob\""
+        mv "$libraries_image_build_blob" "$prerelease_path"
         if [ $? -ne 0 ]; then
             echo "* Warning: the mv command failed."
         fi
@@ -100,17 +106,17 @@ if [ $? -ne 0 ]; then
         exit 1
     fi
 else
-    echo "* The container will be built using the existing docker image $library_image"
+    echo "* The container will be built using the existing docker image $libraries_image"
 fi
 
-# sudo docker container run -d --name $library_image unzip xvf $contained_arc -C $contained_repos
+# sudo docker container run -d --name $libraries_image unzip xvf $contained_arc -C $contained_repos
 container_Id=`sudo docker ps -aqf "name=$container_name"`
-# ^ ONLY works with container_name not library_image
+# ^ ONLY works with container_name not libraries_image
 
 cat > /dev/null <<END
 if [ "@$container_Id" = "@" ]; then
     echo "* creating a container named $container_name"
-    sudo docker create --name=$container_name $library_image
+    sudo docker create --name=$container_name $libraries_image
     # ^ output is the Id
     if [ $? -ne 0 ]; then
         echo "FAILED"
@@ -137,24 +143,29 @@ if [ "@$container_Id" != "@" ]; then
     exit 0
 fi
 echo "There is no container_Id for container_name=$container_name, so checking for image:"
-sudo docker image inspect $docker_finetest_server_image_name --format "* docker is looking for the image..."
+sudo docker image inspect $server_image --format "* docker is looking for the image..."
 if [ $? -ne 0 ]; then
     echo "NOT FOUND, so:"
-    echo "* building $docker_finetest_server_image_name ($docker_finetest_server_image_dir inherits $library_image, so using built libraries from that should work)..."
-    sudo docker build -t $docker_finetest_server_image_name $docker_finetest_server_image_dir
-    # ^ always returns 1 for some reason
-    # if [ $? -ne 0 ]; then
-    #     exit 1
-    # fi
+    echo "* building $server_image ($server_image_dir inherits $libraries_image, so using built libraries from that should work)..."
+    if [ ! -d "$server_image_dir" ]; then
+        echo "Error: \"$server_image_dir\" doesn't exist in `pwd`."
+        exit 1
+    fi
+    sudo docker build -t $server_image $server_image_dir
+    # ^ ./mtcompile-program.pl --build --finetest --server returns 1 for some reason, so there is a custom build script used in the Dockerfile
+    # -t: Name and optionally a tag in the 'name:tag' format
+    if [ $? -ne 0 ]; then
+        exit 1
+    fi
 else
-    echo "* using existing $docker_finetest_server_image_name"
+    echo "* using existing $server_image"
 fi
 
 if [ "@$container_Id" = "@" ]; then
-    # sudo docker run --name $container_name $library_image $run_all_build_commands_script
+    # sudo docker run --name $container_name $libraries_image $run_all_build_commands_script
     # ^ build was moved to the Dockerfile
-    echo "* creating container $container_name from image $docker_finetest_server_image_name"
-    sudo docker run --name $container_name $docker_finetest_server_image_name /opt/linux-minetest-kit/minetest/minetestserver
+    echo "* creating container $container_name from image $server_image"
+    sudo docker run --name $container_name $server_image /opt/linux-minetest-kit/minetest/minetestserver
     code=$?
     if [ $code -ne 0 ]; then
         cat <<END
@@ -164,7 +175,7 @@ if [ "@$container_Id" = "@" ]; then
   sudo docker rm --force $container_name
 - Update the image as follows:
   sudo docker rm --force $container_name
-  sudo docker rmi $docker_finetest_server_image_name
+  sudo docker rmi $server_image
   sudo docker image prune --force
   # --force: Don't prompt for confirmation.
 
@@ -202,15 +213,15 @@ echo
 # as expected. See <https://www.howtogeek.com/devops/how-to-run-gui-applications-in-a-docker-container/>.
 # Therefore:
 
-# echo "* Creating image \"$server_finetest_image\"..."
-# sudo docker commit $container_Id $server_finetest_image
+# echo "* Creating image \"$server_image\"..."
+# sudo docker commit $container_Id $server_image
 # if [ $? -ne 0 ]; then
-#     echo "FAILED (sudo docker commit $container_Id $server_finetest_image)"
+#     echo "FAILED (sudo docker commit $container_Id $server_image)"
 # fi
 # echo "* Running $server_bin_path in container \"$server_container\""
-# sudo docker container run --name $server_container $server_finetest_image $server_bin_path
+# sudo docker container run --name $server_container $server_image $server_bin_path
 # if [ $? -ne 0 ]; then
-#     echo "FAILED (sudo docker container run --name $server_container $server_finetest_image $server_bin_path)"
+#     echo "FAILED (sudo docker container run --name $server_container $server_image $server_bin_path)"
 # fi
 # ^ Build the server as a separate step instead (see further up)
 
@@ -224,7 +235,7 @@ How to use the image:
   sudo docker image ls
   # ^ See what images are installed (one image can be used for many containers).
 
-  sudo docker rmi $library_image
+  sudo docker rmi $libraries_image
   # ^ Remove a docker image (This is necessary after updating the unversioned Docker image to avoid cached RUN commands from doing nothing when the script after RUN changes).
 
   sudo docker image prune --force
@@ -254,12 +265,12 @@ How to use the image:
   # ^ Stop a container by name (See <https://www.tecmint.com/name-docker-containers/>)
   #   You must use the container name (as determined using the "ps" subcommand), not the image name.
 
-  sudo docker container run -it $library_image /bin/bash
+  sudo docker container run -it $libraries_image /bin/bash
   # ^ Run an interactive terminal (Type 'exit' to exit)
   #   (based on <https://phoenixnap.com/kb/docker-run-command-with-examples>)
 
-  sudo docker commit $container_Id $server_finetest_image
-  sudo docker container run --name tmp_test_im -it $server_finetest_image /bin/bash
+  sudo docker commit $container_Id $server_image
+  sudo docker container run --name tmp_test_im -it $server_image /bin/bash
   # ^ Transform the container into an image and inspect the internals manually
   #   (based on <https://www.thorsten-hans.com/how-to-run-commands-in-stopped-docker-containers/>).
   #   Then: sudo docker rm --force tmp_test_im
diff --git a/docker/server-finetest-devuan-chimaera/Dockerfile b/docker/server-finetest-devuan-chimaera/Dockerfile
index cbb9eb1..4f6724b 100644
--- a/docker/server-finetest-devuan-chimaera/Dockerfile
+++ b/docker/server-finetest-devuan-chimaera/Dockerfile
@@ -1,6 +1,6 @@
 FROM linux-minetest-kit/libraries-devuan-chimaera
-COPY build-and-check.sh /opt/
+COPY build-and-check.sh /opt
 WORKDIR /opt/linux-minetest-kit
-RUN ./mtcompile-program.pl --build --finetest --server
+# RUN ./mtcompile-program.pl --build --finetest --server
 # ^ Always returns 1, so:
-# RUN build-and-check.sh
+RUN /opt/build-and-check.sh
diff --git a/docker/server-finetest-devuan-chimaera/build-and-check.sh b/docker/server-finetest-devuan-chimaera/build-and-check.sh
index 2b0cb92..25b0ac3 100755
--- a/docker/server-finetest-devuan-chimaera/build-and-check.sh
+++ b/docker/server-finetest-devuan-chimaera/build-and-check.sh
@@ -1,11 +1,17 @@
 #!/bin/bash
-./mtcompile-program.pl --build --finetest --server
-echo "Returned $1"
-good_flag_file=minetest/bin/multicraftserver
+./mtcompile-program.pl build --finetest --server
+echo "Done './mtcompile-program.pl build --finetest --server' (returned $?)"
+good_flag_file_name=multicraftserver
+good_flag_file=minetest/bin/$good_flag_file_name
 if [ -f "$good_flag_file" ]; then
-    echo "* forcing OK return since found \"$good_flag_file\""
+    echo "* forcing OK return since found \"$good_flag_file\" in `pwd`"
     exit 0
 else
-    echo "* forcing OK return since \"$good_flag_file\" doesn't exist"
+    echo "* forcing FAILED return since \"$good_flag_file\" doesn't exist in `pwd`"
+    echo "* searching..."
+    find /opt -name "minetest*" | grep -v "minetest\.mo" | grep -v "minetest\.po"
+    find /opt -name "multicraft*"
+    echo "* searching for $good_flag_file_name..."
+    find /opt -name $good_flag_file_name
     exit 1
 fi