diff --git a/.github/workflows/golangci-lint.yaml b/.github/workflows/golangci-lint.yaml
new file mode 100644
index 0000000..444b398
--- /dev/null
+++ b/.github/workflows/golangci-lint.yaml
@@ -0,0 +1,59 @@
+name: Golangci lint
+
+on:
+  push:
+    branches-ignore: [main]
+  pull_request:
+    branches: [main]
+
+permissions:
+  # Required: allow read access to the content for analysis.
+  contents: read
+  # Optional: allow read access to pull request. Use with `only-new-issues` option.
+  pull-requests: read
+
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Install Senzing API
+        uses: senzing-factory/github-action-install-senzing-api@v3
+        with:
+          senzingapi-runtime-version: staging-v4
+
+      - name: Copy Senzing headers
+        run: |
+          mkdir --parents ./szconfig/gohelpers
+          cp /opt/senzing/er/sdk/c/*.h ./szconfig/
+          cp /opt/senzing/er/sdk/c/gohelpers/*.h ./szconfig/gohelpers
+          mkdir --parents ./szconfigmanager/gohelpers
+          cp /opt/senzing/er/sdk/c/*.h ./szconfigmanager/
+          cp /opt/senzing/er/sdk/c/gohelpers/*.h ./szconfigmanager/gohelpers
+          mkdir --parents ./szdiagnostic/gohelpers
+          cp /opt/senzing/er/sdk/c/*.h ./szdiagnostic/
+          cp /opt/senzing/er/sdk/c/gohelpers/*.h ./szdiagnostic/gohelpers
+          mkdir --parents ./szengine/gohelpers
+          cp /opt/senzing/er/sdk/c/*.h ./szengine/
+          cp /opt/senzing/er/sdk/c/gohelpers/*.h ./szengine/gohelpers
+          mkdir --parents ./szproduct/gohelpers
+          cp /opt/senzing/er/sdk/c/*.h ./szproduct/
+          cp /opt/senzing/er/sdk/c/gohelpers/*.h ./szproduct/gohelpers
+
+      - name: Setup go
+        uses: actions/setup-go@v5
+        with:
+          go-version: 1.21
+
+      - name: Perform linting
+        uses: golangci/golangci-lint-action@v6
+        with:
+          args: --config=${{ github.workspace }}/.github/linters/.golangci.yaml
+          only-new-issues: false
+          version: latest
diff --git a/Makefile b/Makefile
index ad62ae4..9576d5b 100644
--- a/Makefile
+++ b/Makefile
@@ -38,6 +38,7 @@ GO_ARCH = $(word 2, $(GO_OSARCH))
 # Can be overridden with "export"
 # Example: "export LD_LIBRARY_PATH=/path/to/my/senzing/er/lib"
 
+DOCKER_IMAGE_TAG ?= $(GIT_REPOSITORY_NAME):$(GIT_VERSION)
 GOBIN ?= $(shell go env GOPATH)/bin
 LD_LIBRARY_PATH ?= /opt/senzing/er/lib
 
diff --git a/cmd/doc.go b/cmd/doc.go
index 631a207..b78ad9e 100644
--- a/cmd/doc.go
+++ b/cmd/doc.go
@@ -1,4 +1,4 @@
 /*
-The cmd package is used for Cobra integration.
+Package cmd is used for Cobra and Viper integration.
 */
 package cmd
diff --git a/doc.go b/doc.go
index 044fa0d..ed6e2ed 100644
--- a/doc.go
+++ b/doc.go
@@ -1,4 +1,4 @@
 /*
-One or two sentence synopsys of the module.  The Senzing XXXX module is...
+Module explain is the implementation of the "senzing-tools explain" command.
 */
 package main
diff --git a/docs/development.md b/docs/development.md
index 6ff5155..eca91bf 100644
--- a/docs/development.md
+++ b/docs/development.md
@@ -13,7 +13,6 @@ These are "one-time tasks" which may already have been completed.
 1. The following software programs need to be installed:
     1. [git]
     1. [make]
-    1. [docker]
     1. [go]
 
 ## Install Senzing C library
@@ -168,7 +167,7 @@ Create a code coverage map.
 
 1. If a web page doesn't appear, visit [localhost:6060].
 1. Senzing documentation will be in the "Third party" section.
-   `github.com` > `senzing` > `go-cmdhelping`
+   `github.com` > `senzing` > `explain`
 
 1. When a versioned release is published with a `v0.0.0` format tag,
 the reference can be found by clicking on the following badge at the top of the README.md page.
@@ -243,7 +242,6 @@ Example:
 ## References
 
 [clone-repository]: https://github.com/senzing-garage/knowledge-base/blob/main/HOWTO/clone-repository.md
-[docker]: https://github.com/senzing-garage/knowledge-base/blob/main/WHATIS/docker.md
 [git]: https://github.com/senzing-garage/knowledge-base/blob/main/WHATIS/git.md
 [Go Reference Badge]: https://pkg.go.dev/badge/github.com/senzing-garage/explain.svg
 [Go Reference]: https://pkg.go.dev/github.com/senzing-garage/explain
diff --git a/explainer/doc.go b/explainer/doc.go
index 107ba9e..52d7b53 100644
--- a/explainer/doc.go
+++ b/explainer/doc.go
@@ -1,40 +1,4 @@
 /*
-One or two sentence synopsis of the package...
-
-# Overview
-
-One or two paragraph overview of the package...
-(This page describes the nature of the individual package.)
-
-More information at https://github.com/senzing-garage/explain
-
-# Another Header
-
-Details of the package...
-Lorem ipsum dolor sit amet, consectetur adipiscing elit...
-
-# Examples
-
-The examples given here should be specific to the package.
-
-Examples of use can be seen in the examplepackage_test.go files.
-
-	package main
-	import (
-		fmt
-
-		"github.com/senzing-garage/explain/examplepackage"
-	)
-
-	func main() {
-		ctx := context.TODO()
-		testObject := &ExamplePackageImpl{
-			Something: "I'm here",
-		}
-		err := testObject.SaySomething(ctx)
-		if err != nil {
-			fmt.Println("whoops")
-		}
-	}
+Package explainer implements the "explainer" command.
 */
 package explainer
diff --git a/makefiles/linux.mk b/makefiles/linux.mk
index 800641e..9896ffa 100644
--- a/makefiles/linux.mk
+++ b/makefiles/linux.mk
@@ -47,8 +47,8 @@ hello-world-osarch-specific:
 package-osarch-specific: docker-build-package
 	@mkdir -p $(TARGET_DIRECTORY) || true
 	@CONTAINER_ID=$$(docker create $(DOCKER_BUILD_IMAGE_NAME)); \
-	@docker cp $$CONTAINER_ID:/output/. $(TARGET_DIRECTORY)/; \
-	@docker rm -v $$CONTAINER_ID
+	docker cp $$CONTAINER_ID:/output/. $(TARGET_DIRECTORY)/; \
+	docker rm -v $$CONTAINER_ID
 
 
 .PHONY: run-osarch-specific
diff --git a/package.Dockerfile b/package.Dockerfile
index cb6543f..e1c8f17 100755
--- a/package.Dockerfile
+++ b/package.Dockerfile
@@ -105,8 +105,8 @@ ARG PROGRAM_NAME
 
 # Copy files from prior step.
 
-COPY --from=fpm_builder "/output/*"                                  "/output/"
-COPY --from=fpm_builder "/output/linux-amd64/${PROGRAM_NAME}"        "/output/linux-amd64/${PROGRAM_NAME}"
+COPY --from=fpm_builder "/output/*"                           "/output/"
+COPY --from=fpm_builder "/output/linux-amd64/${PROGRAM_NAME}" "/output/linux-amd64/${PROGRAM_NAME}"
 
 USER 1001
 CMD ["/bin/bash"]
diff --git a/rootfs/.dummy.txt b/rootfs/.dummy.txt
deleted file mode 100644
index e69de29..0000000
diff --git a/rootfs/app/container-test.sh b/rootfs/app/container-test.sh
new file mode 100644
index 0000000..9f72897
--- /dev/null
+++ b/rootfs/app/container-test.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+# Return codes.
+
+OK=0
+NOT_OK=1
+
+# Tests.
+
+echo "Doing testing."
+
+exit ${OK}
diff --git a/rootfs/healthcheck.sh b/rootfs/app/healthcheck.sh
similarity index 100%
rename from rootfs/healthcheck.sh
rename to rootfs/app/healthcheck.sh