Optimize docker image build (#153)

Dockerfile.arm7x86

@@ -3,4 +3,4 @@ ADD build/dns-proxy-server-linux-arm-*.tgz /app/
 WORKDIR /app
 LABEL dps.container=true
 VOLUME ["/var/run/docker.sock", "/var/run/docker.sock"]
-CMD ["bash", "-c", "/app/dns-proxy-server"]
+ENTRYPOINT ["/app/dns-proxy-server"]

Dockerfile.arm8x64

@@ -3,4 +3,4 @@ ADD build/dns-proxy-server-linux-arm64-*.tgz /app/
 WORKDIR /app
 LABEL dps.container=true
 VOLUME ["/var/run/docker.sock", "/var/run/docker.sock"]
-CMD ["bash", "-c", "/app/dns-proxy-server"]
+ENTRYPOINT ["/app/dns-proxy-server"]

Dockerfile.hub

@@ -1,10 +1,12 @@
-FROM debian:10-slim
-WORKDIR /app
+FROM debian:10-slim AS BUILDER
 ENV TMP_NAME=/tmp/dns-proxy-server.tgz
-RUN apt-get update && apt-get install --force-yes -y curl &&\
+RUN apt-get update && apt-get install -y curl &&\
     curl -L https://github.com/mageddo/dns-proxy-server/releases/download/2.17.2/dns-proxy-server-linux-amd64-2.17.2.tgz > $TMP_NAME && \
-    tar -xvf $TMP_NAME -C /app/ &&\
-    rm -r /tmp && apt-get purge -y curl && apt-get clean
+    mkdir /app && tar -xvf $TMP_NAME -C /app
+
+FROM debian:10-slim
 LABEL dps.container=true
+WORKDIR /app
+COPY --from=BUILDER /app /app
 VOLUME ["/var/run/docker.sock", "/var/run/docker.sock"]
-CMD ["bash", "-c", "/app/dns-proxy-server"]
+ENTRYPOINT ["/app/dns-proxy-server"]

RELEASE-NOTES.md

@@ -1,3 +1,6 @@
+### 2.17.3
+* Separating the build image from final image, removing unnecessary bash command
+
 ### 2.17.2
 * Fixing docker build was using deprecated apt-get option
 

VERSION

@@ -1 +1 @@
-2.17.2
+2.17.3