Adds Dockerfile and build commands for it (#19)

Docker support

.github/workflows/upload_release.yaml

@@ -42,3 +42,18 @@ jobs:
         uses: softprops/action-gh-release@v1
         with:
           files: rpm/target/rpm/com.teragrep-aer_01/RPMS/noarch/com.teragrep-aer_01-*.rpm
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v2.1.0
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Lowercase repository name
+        run: echo "REPO_LC=${GITHUB_REPOSITORY,,}" >> $GITHUB_ENV
+
+      - name: 'Build Image'
+        run: |
+          docker buildx build --output type=docker --tag ghcr.io/${{ env.REPO_LC }}:${{ github.event.release.tag_name }} --tag ghcr.io/${{ env.REPO_LC }}:latest  .
+          docker push ghcr.io/${{ env.REPO_LC }} --all-tags

Dockerfile

@@ -0,0 +1,6 @@
+FROM rockylinux:8
+COPY rpm/target/rpm/com.teragrep-aer_01/RPMS/noarch/com.teragrep-aer_01-*.rpm /rpm/
+RUN dnf -y install /rpm/*.rpm && rm -f /dnf/*.rpm && dnf clean all
+WORKDIR /opt/teragrep/aer_01
+ENTRYPOINT [ "/usr/bin/java", "-Dconfig.source=environment", "-jar", "/opt/teragrep/aer_01/lib/aer_01.jar" ]
+CMD [""]

pom.xml

@@ -205,14 +205,13 @@
             <exclude>.gitignore</exclude>
             <exclude>.gitmodules</exclude>
             <!-- ci -->
-            <exclude>.github/workflows/*.yml</exclude>
-            <exclude>.github/workflows/*.yaml</exclude>
+            <exclude>.github/**</exclude>
             <!-- readme -->
             <exclude>README.adoc</exclude>
             <!-- logger configs -->
             <exclude>**/log4j2.xml</exclude>
-            <!-- internal -->
-            <exclude>Jenkinsfile</exclude>
+            <!-- Docker -->
+            <exclude>Dockerfile</exclude>
             <!-- rpm -->
             <exclude>rpm/**</exclude>
           </excludes>