✨ Enhance Dockerfiles with metadata labels and optimize image size

Author: mkjsix

core/Dockerfile

@@ -1,17 +1,32 @@
-FROM eclipse-temurin:21-jre
+ARG ECLIPSE_TEMURIN_JRE=21-jre
+FROM eclipse-temurin:${ECLIPSE_TEMURIN_JRE}
 
+LABEL org.opencontainers.image.title="RESTHeart"
+LABEL org.opencontainers.image.description="RESTHeart is Java Framework, built on top of Undertow"
+LABEL org.opencontainers.image.url="https://restheart.org"
+LABEL org.opencontainers.image.licenses="AGPL-3.0, Apache-2.0"
+LABEL org.opencontainers.image.authors="SoftInstigate <[email protected]>"
+LABEL org.opencontainers.image.vendor="SoftInstigate"
+LABEL org.opencontainers.image.source="https://github.com/SoftInstigate/restheart"
+LABEL org.opencontainers.image.documentation="https://restheart.org/docs"
 LABEL maintainer="SoftInstigate <[email protected]>"
 
+# Reduce image size by removing package lists after installation
 RUN apt-get update && \
-	apt-get --no-install-recommends install -y && \
-	apt-get clean
+    apt-get upgrade -y && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
 
 WORKDIR /opt/restheart
-COPY target/restheart.jar ./restheart.jar
+
+# Copy the executable jar and the required libraries
+COPY target/restheart.jar ./restheart.jarq
 COPY target/lib/*.jar lib/
 COPY target/plugins/*.jar plugins/
 COPY target/plugins/lib/*.jar plugins/lib/
 
+# Set environment variables
 ENV RHO='/mclient/connection-string->"mongodb://host.docker.internal";/http-listener/host->"0.0.0.0"'
+
 ENTRYPOINT [ "java", "-Dfile.encoding=UTF-8", "-server", "-jar", "restheart.jar" ]
 EXPOSE 8009 8080 4443

core/Dockerfile.distroless

@@ -1,13 +1,25 @@
 FROM gcr.io/distroless/java21-debian12:latest
 
+LABEL org.opencontainers.image.title="RESTHeart distroless"
+LABEL org.opencontainers.image.description="RESTHeart is Java Framework, built on top of Undertow"
+LABEL org.opencontainers.image.url="https://restheart.org"
+LABEL org.opencontainers.image.licenses="AGPL-3.0, Apache-2.0"
+LABEL org.opencontainers.image.authors="SoftInstigate <[email protected]>"
+LABEL org.opencontainers.image.vendor="SoftInstigate"
+LABEL org.opencontainers.image.source="https://github.com/SoftInstigate/restheart"
+LABEL org.opencontainers.image.documentation="https://restheart.org/docs"
 LABEL maintainer="SoftInstigate <[email protected]>"
 
 WORKDIR /opt/restheart
+
+# Copy the executable jar and the required libraries
 COPY target/restheart.jar ./restheart.jar
 COPY target/lib/*.jar lib/
 COPY target/plugins/*.jar plugins/
 COPY target/plugins/lib/*.jar plugins/lib/
 
+# Set environment variables
 ENV RHO='/mclient/connection-string->"mongodb://host.docker.internal";/http-listener/host->"0.0.0.0"'
+
 ENTRYPOINT [ "java", "-Dfile.encoding=UTF-8", "-server", "-jar", "restheart.jar" ]
 EXPOSE 8009 8080 4443

core/Dockerfile.graalvm

@@ -1,18 +1,31 @@
-FROM softinstigate/graalvm:21.0.2-graalce
+ARG GRAALVM_VERSION=21.0.2-graalce
+FROM softinstigate/graalvm:${GRAALVM_VERSION}
 
+LABEL org.opencontainers.image.title="RESTHeart GraalVM"
+LABEL org.opencontainers.image.description="RESTHeart is Java Framework, built on top of Undertow"
+LABEL org.opencontainers.image.url="https://restheart.org"
+LABEL org.opencontainers.image.licenses="AGPL-3.0, Apache-2.0"
+LABEL org.opencontainers.image.authors="SoftInstigate <[email protected]>"
+LABEL org.opencontainers.image.vendor="SoftInstigate"
+LABEL org.opencontainers.image.source="https://github.com/SoftInstigate/restheart"
+LABEL org.opencontainers.image.documentation="https://restheart.org/docs"
 LABEL maintainer="SoftInstigate <[email protected]>"
 
 WORKDIR /opt/restheart
+
+# Copy the executable jar and the required libraries
 COPY target/restheart.jar ./restheart.jar
 COPY target/lib/*.jar lib/
 COPY target/plugins/*.jar plugins/
 COPY target/plugins/lib/*.jar plugins/lib/
 
+# Install SDKMAN
 SHELL ["/bin/bash", "-i", "-c"]
-
 RUN bash -c "source $HOME/.sdkman/bin/sdkman-init.sh"
 ENV PATH="/root/.sdkman/candidates/java/current/bin:$PATH"
 
+# set environment variables
 ENV RHO='/mclient/connection-string->"mongodb://host.docker.internal";/http-listener/host->"0.0.0.0"'
+
 ENTRYPOINT [ "java", "-Dfile.encoding=UTF-8", "-server", "-jar", "restheart.jar" ]
 EXPOSE 8009 8080 4443

core/Dockerfile.native

@@ -1,11 +1,32 @@
-FROM debian:12.10-slim
+ARG DEBIAN_VERSION=12.10-slim
+FROM debian:${DEBIAN_VERSION}
 
+LABEL org.opencontainers.image.title="RESTHeart native"
+LABEL org.opencontainers.image.description="RESTHeart is Java Framework, built on top of Undertow"
+LABEL org.opencontainers.image.url="https://restheart.org"
+LABEL org.opencontainers.image.licenses="AGPL-3.0, Apache-2.0"
+LABEL org.opencontainers.image.authors="SoftInstigate <[email protected]>"
+LABEL org.opencontainers.image.vendor="SoftInstigate"
+LABEL org.opencontainers.image.source="https://github.com/SoftInstigate/restheart"
+LABEL org.opencontainers.image.documentation="https://restheart.org/docs"
 LABEL maintainer="SoftInstigate <[email protected]>"
 
+# Reduce image size by removing package lists after installation
+RUN apt-get update && \
+    apt-get upgrade -y && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
 WORKDIR /opt/restheart
-COPY target/restheart .
-RUN chmod +x restheart && mkdir etc plugins
 
+# Copy only the executable binary
+COPY target/restheart ./restheart
+
+# Create required directories and set permissions in one layer
+RUN chmod +x restheart && mkdir -p etc plugins
+
+# Set environment variables
 ENV RHO='/mclient/connection-string->"mongodb://host.docker.internal";/http-listener/host->"0.0.0.0"'
-ENTRYPOINT [ "./restheart" ]
-EXPOSE 8009 8080 4443
+
+EXPOSE 8009 8080 4443
+ENTRYPOINT ["./restheart"]