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Dockerfile
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# SPDX-License-Identifier: Apache-2.0
# Copyright 2021 Authors of KubeArmor
### Builder
FROM golang:1.22-alpine3.20 AS builder
RUN apk --no-cache update
RUN apk add --no-cache git clang llvm make gcc protobuf
WORKDIR /usr/src/KubeArmor
COPY . .
WORKDIR /usr/src/KubeArmor/KubeArmor
RUN go install github.com/golang/protobuf/protoc-gen-go@latest
RUN go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
RUN make
WORKDIR /usr/src/KubeArmor/BPF
RUN apk add curl
# install bpftool
RUN arch=$(uname -m) bpftool_version=v7.3.0 && \
if [[ "$arch" == "aarch64" ]]; then \
arch=arm64; \
elif [[ "$arch" == "x86_64" ]]; then \
arch=amd64; \
fi && \
curl -LO https://github.com/libbpf/bpftool/releases/download/$bpftool_version/bpftool-$bpftool_version-$arch.tar.gz && \
tar -xzf bpftool-$bpftool_version-$arch.tar.gz -C /usr/local/bin && \
chmod +x /usr/local/bin/bpftool
COPY ./KubeArmor/BPF .
RUN make
### Builder test
FROM builder AS builder-test
WORKDIR /usr/src/KubeArmor/KubeArmor
RUN CGO_ENABLED=0 go test -covermode=atomic -coverpkg=./... -c . -o kubearmor-test
### Make executable image
FROM alpine:3.20 AS kubearmor
RUN echo "@community http://dl-cdn.alpinelinux.org/alpine/edge/community" | tee -a /etc/apk/repositories
RUN apk --no-cache update
RUN apk add apparmor@community apparmor-utils@community bash
COPY --from=builder /usr/src/KubeArmor/KubeArmor/kubearmor /KubeArmor/kubearmor
COPY --from=builder /usr/src/KubeArmor/BPF/*.o /opt/kubearmor/BPF/
COPY --from=builder /usr/src/KubeArmor/KubeArmor/templates/* /KubeArmor/templates/
ENTRYPOINT ["/KubeArmor/kubearmor"]
FROM kubearmor AS kubearmor-test
COPY --from=builder-test /usr/src/KubeArmor/KubeArmor/kubearmor-test /KubeArmor/kubearmor-test
ENTRYPOINT ["/KubeArmor/kubearmor-test"]
### TODO ###
### build apparmor_parser binary
## debian:10 uses glibc2.28 version similar to ubi9
# FROM debian:10 AS apparmor-builder
# RUN apt-get update && apt-get install -y apparmor
# RUN mkdir /tmp/apparmor && \
# cp /sbin/apparmor_parser /tmp/apparmor/
### Make UBI-based executable image
FROM redhat/ubi9-minimal AS kubearmor-ubi
ARG VERSION=latest
ENV KUBEARMOR_UBI=true
LABEL name="kubearmor" \
vendor="Accuknox" \
version=${VERSION} \
release=${VERSION} \
summary="kubearmor container image based on redhat ubi" \
description="KubeArmor is a cloud-native runtime security enforcement system that restricts the behavior \
(such as process execution, file access, and networking operations) of pods, containers, and nodes (VMs) \
at the system level."
RUN microdnf -y update && \
microdnf -y install --nodocs --setopt=install_weak_deps=0 --setopt=keepcache=0 shadow-utils procps libcap && \
microdnf clean all
RUN groupadd --gid 1000 default \
&& useradd --uid 1000 --gid default --shell /bin/bash --create-home default
COPY LICENSE /licenses/license.txt
COPY --from=builder --chown=default:default /usr/src/KubeArmor/KubeArmor/kubearmor /KubeArmor/kubearmor
COPY --from=builder --chown=default:default /usr/src/KubeArmor/BPF/*.o /opt/kubearmor/BPF/
COPY --from=builder --chown=default:default /usr/src/KubeArmor/KubeArmor/templates/* /KubeArmor/templates/
# TODO
# COPY --from=apparmor-builder /tmp/apparmor/apparmor_parser /usr/sbin/
# RUN chmod u+s /usr/sbin/apparmor_parser
RUN setcap "cap_sys_admin=ep cap_sys_ptrace=ep cap_ipc_lock=ep cap_sys_resource=ep cap_dac_override=ep cap_dac_read_search=ep" /KubeArmor/kubearmor
USER 1000
ENTRYPOINT ["/KubeArmor/kubearmor"]
### Make UBI-based test executable image for coverage calculation
FROM redhat/ubi9-minimal AS kubearmor-ubi-test
ARG VERSION=latest
ENV KUBEARMOR_UBI=true
LABEL name="kubearmor" \
vendor="Accuknox" \
version=${VERSION} \
release=${VERSION} \
summary="kubearmor container image based on redhat ubi" \
description="KubeArmor is a cloud-native runtime security enforcement system that restricts the behavior \
(such as process execution, file access, and networking operations) of pods, containers, and nodes (VMs) \
at the system level."
RUN microdnf -y update && \
microdnf -y install --nodocs --setopt=install_weak_deps=0 --setopt=keepcache=0 shadow-utils procps libcap && \
microdnf clean all
RUN groupadd --gid 1000 default \
&& useradd --uid 1000 --gid default --shell /bin/bash --create-home default
COPY LICENSE /licenses/license.txt
COPY --from=builder --chown=default:default /usr/src/KubeArmor/KubeArmor/kubearmor /KubeArmor/kubearmor
COPY --from=builder --chown=default:default /usr/src/KubeArmor/BPF/*.o /opt/kubearmor/BPF/
COPY --from=builder --chown=default:default /usr/src/KubeArmor/KubeArmor/templates/* /KubeArmor/templates/
COPY --from=builder-test --chown=default:default /usr/src/KubeArmor/KubeArmor/kubearmor-test /KubeArmor/kubearmor-test
RUN setcap "cap_sys_admin=ep cap_sys_ptrace=ep cap_ipc_lock=ep cap_sys_resource=ep cap_dac_override=ep cap_dac_read_search=ep" /KubeArmor/kubearmor-test
USER 1000
ENTRYPOINT ["/KubeArmor/kubearmor-test"]