chore(ci): mount package directory at image build time

This updates our release workflow to use docker's build-time [bind mount](https://docs.docker.com/reference/dockerfile/#run---mounttypebind) support to supply the package file(s) instead of copying into the image. The idea behind this is that mounting the package removes a large `COPY` layer and reduces the image size. The directory that is mounted is checksum-ed by docker as part of the build context, so build cache is automatically invalidated when the package file changes. ``` $ docker image ls kong/kong-gateway-dev:master \ > --format 'table {{.Repository}}\t{{.Tag}}\t{{.Size}}' REPOSITORY TAG SIZE kong/kong-gateway-dev master 538MB ``` ``` $ docker image history kong/kong-gateway-dev:master \ > --format 'table {{.CreatedAt}}\t{{.CreatedBy}}\t{{.Size}}' CREATED AT CREATED BY SIZE 2024-07-08T01:52:13-07:00 CMD ["kong" "docker-start"] 0B 2024-07-08T01:52:13-07:00 HEALTHCHECK &{["CMD-SHELL" "kong-health"] "1… 0B 2024-07-08T01:52:13-07:00 STOPSIGNAL SIGQUIT 0B 2024-07-08T01:52:13-07:00 EXPOSE map[8000/tcp:{} 8001/tcp:{} 8002/tcp:… 0B 2024-07-08T01:52:13-07:00 ENTRYPOINT ["/entrypoint.sh"] 0B 2024-07-08T01:52:13-07:00 USER kong 0B 2024-07-08T01:52:13-07:00 COPY build/dockerfiles/entrypoint.sh /entryp… 2.22kB 2024-07-08T01:52:13-07:00 RUN |6 KONG_VERSION=3.8.0.0 KONG_PREFIX=/usr… 379MB 2024-07-08T01:51:55-07:00 COPY bazel-bin/pkg/kong.amd64.deb /tmp/kong.… 81.3MB 2024-07-08T01:51:55-07:00 ARG KONG_ARTIFACT_PATH=bazel-bin/pkg/ 0B 2024-07-08T01:51:55-07:00 ARG KONG_ARTIFACT=kong.amd64.deb 0B 2024-07-08T01:51:55-07:00 ARG TARGETARCH=amd64 0B 2024-07-08T01:51:55-07:00 ARG EE_PORTS=8002 8445 8003 8446 8004 8447 0B 2024-07-08T01:51:55-07:00 ENV KONG_PREFIX=/usr/local/kong 0B 2024-07-08T01:51:55-07:00 ARG KONG_PREFIX=/usr/local/kong 0B 2024-07-08T01:51:55-07:00 ENV KONG_VERSION=3.8.0.0 0B 2024-07-08T01:51:55-07:00 ARG KONG_VERSION=3.8.0.0 0B 2024-07-08T01:51:55-07:00 LABEL maintainer=Kong Docker Maintainers <do… 0B 2024-06-27T13:10:12-07:00 /bin/sh -c #(nop) CMD ["/bin/bash"] 0B 2024-06-27T13:10:12-07:00 /bin/sh -c #(nop) ADD file:d5da92199726e42da… 77.9MB 2024-06-27T13:10:10-07:00 /bin/sh -c #(nop) LABEL org.opencontainers.… 0B 2024-06-27T13:10:10-07:00 /bin/sh -c #(nop) LABEL org.opencontainers.… 0B 2024-06-27T13:10:10-07:00 /bin/sh -c #(nop) ARG LAUNCHPAD_BUILD_ARCH 0B 2024-06-27T13:10:10-07:00 /bin/sh -c #(nop) ARG RELEASE 0B ``` ``` $ docker image ls kong/kong-gateway-dev:b5195bbdb9a613a81359b4c1498220738af99a37 \ > --format 'table {{.Repository}}\t{{.Tag}}\t{{.Size}}' REPOSITORY TAG SIZE kong/kong-gateway-dev b5195bbdb9a613a81359b4c1498220738af99a37 457MB ``` ``` $ docker image history kong/kong-gateway-dev:b5195bbdb9a613a81359b4c1498220738af99a37 \ > --format 'table {{.CreatedAt}}\t{{.CreatedBy}}\t{{.Size}}' CREATED AT CREATED BY SIZE 2024-07-08T11:17:32-07:00 CMD ["kong" "docker-start"] 0B 2024-07-08T11:17:32-07:00 HEALTHCHECK &{["CMD-SHELL" "kong-health"] "1… 0B 2024-07-08T11:17:32-07:00 STOPSIGNAL SIGQUIT 0B 2024-07-08T11:17:32-07:00 EXPOSE map[8000/tcp:{} 8001/tcp:{} 8002/tcp:… 0B 2024-07-08T11:17:32-07:00 ENTRYPOINT ["/entrypoint.sh"] 0B 2024-07-08T11:17:32-07:00 USER kong 0B 2024-07-08T11:17:32-07:00 COPY build/dockerfiles/entrypoint.sh /entryp… 2.22kB 2024-07-08T11:17:32-07:00 RUN |6 KONG_VERSION=3.8.0.0 KONG_PREFIX=/usr… 379MB 2024-07-08T11:17:32-07:00 ARG KONG_ARTIFACT_PATH=bazel-bin/pkg 0B 2024-07-08T11:17:32-07:00 ARG KONG_ARTIFACT=kong.amd64.deb 0B 2024-07-08T11:17:32-07:00 ARG TARGETARCH=amd64 0B 2024-07-08T11:17:32-07:00 ARG EE_PORTS=8002 8445 8003 8446 8004 8447 0B 2024-07-08T11:17:32-07:00 ENV KONG_PREFIX=/usr/local/kong 0B 2024-07-08T11:17:32-07:00 ARG KONG_PREFIX=/usr/local/kong 0B 2024-07-08T11:17:32-07:00 ENV KONG_VERSION=3.8.0.0 0B 2024-07-08T11:17:32-07:00 ARG KONG_VERSION=3.8.0.0 0B 2024-07-08T11:17:32-07:00 LABEL maintainer=Kong Docker Maintainers <do… 0B 2024-06-27T13:10:12-07:00 /bin/sh -c #(nop) CMD ["/bin/bash"] 0B 2024-06-27T13:10:12-07:00 /bin/sh -c #(nop) ADD file:d5da92199726e42da… 77.9MB 2024-06-27T13:10:10-07:00 /bin/sh -c #(nop) LABEL org.opencontainers.… 0B 2024-06-27T13:10:10-07:00 /bin/sh -c #(nop) LABEL org.opencontainers.… 0B 2024-06-27T13:10:10-07:00 /bin/sh -c #(nop) ARG LAUNCHPAD_BUILD_ARCH 0B 2024-06-27T13:10:10-07:00 /bin/sh -c #(nop) ARG RELEASE 0B ```
Kong · Jul 8, 2024 · 925359a · 925359a
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commit 925359a
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diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
@@ -398,7 +398,7 @@ jobs:
         platforms: ${{ steps.docker_platforms_arg.outputs.platforms }}
         build-args: |
           KONG_BASE_IMAGE=${{ matrix.base-image }}
-          KONG_ARTIFACT_PATH=bazel-bin/pkg/
+          KONG_ARTIFACT_PATH=bazel-bin/pkg
           KONG_VERSION=${{ needs.metadata.outputs.kong-version }}
           RPM_PLATFORM=${{ steps.docker_rpm_platform_arg.outputs.rpm_platform }}
           EE_PORTS=8002 8445 8003 8446 8004 8447

diff --git a/build/dockerfiles/deb.Dockerfile b/build/dockerfiles/deb.Dockerfile
@@ -14,16 +14,15 @@ ARG EE_PORTS
 ARG TARGETARCH
 
 ARG KONG_ARTIFACT=kong.${TARGETARCH}.deb
-ARG KONG_ARTIFACT_PATH=
-COPY ${KONG_ARTIFACT_PATH}${KONG_ARTIFACT} /tmp/kong.deb
+ARG KONG_ARTIFACT_PATH
 
-RUN apt-get update \
+RUN --mount=type=bind,source=${KONG_ARTIFACT_PATH},target=/tmp/pkg \
+    apt-get update \
     && apt-get -y upgrade \
     && apt-get -y autoremove \
     && DEBIAN_FRONTEND=noninteractive apt-get install -y tzdata \
-    && apt-get install -y --no-install-recommends /tmp/kong.deb \
+    && apt-get install -y --no-install-recommends /tmp/pkg/${KONG_ARTIFACT} \
     && rm -rf /var/lib/apt/lists/* \
-    && rm -rf /tmp/kong.deb \
     && chown kong:0 /usr/local/bin/kong \
     && chown -R kong:0 ${KONG_PREFIX} \
     && ln -sf /usr/local/openresty/bin/resty /usr/local/bin/resty \

diff --git a/build/dockerfiles/rpm.Dockerfile b/build/dockerfiles/rpm.Dockerfile
@@ -28,13 +28,12 @@ ARG EE_PORTS
 ARG TARGETARCH
 
 ARG KONG_ARTIFACT=kong.${RPM_PLATFORM}.${TARGETARCH}.rpm
-ARG KONG_ARTIFACT_PATH=
-COPY ${KONG_ARTIFACT_PATH}${KONG_ARTIFACT} /tmp/kong.rpm
+ARG KONG_ARTIFACT_PATH
 
 # hadolint ignore=DL3015
-RUN yum update -y \
-    && yum install -y /tmp/kong.rpm \
-    && rm /tmp/kong.rpm \
+RUN --mount=type=bind,source=${KONG_ARTIFACT_PATH},target=/tmp/pkg \
+    yum update -y \
+    && yum install -y /tmp/pkg/${KONG_ARTIFACT} \
     && chown kong:0 /usr/local/bin/kong \
     && chown -R kong:0 /usr/local/kong \
     && ln -sf /usr/local/openresty/bin/resty /usr/local/bin/resty \