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# Base image with Alpine Linux
# This image is a lightweight, secure, and flexible base for customizations
ARG ALPINE_VERSION=3.20
FROM docker.io/alpine:${ALPINE_VERSION}
# Metadata about the image
LABEL maintainer="Focela Technologies (https://github.com/focela)" \
description="Custom Alpine image with added utilities for logging, monitoring, and scheduling"
# Define versions for dependencies
# These ARGs allow specifying versions of dependencies at build time
ARG GOLANG_VERSION=1.21.10
ARG DOAS_VERSION
ARG FLUENTBIT_VERSION
ARG S6_OVERLAY_VERSION
ARG YQ_VERSION
ARG ZABBIX_VERSION
# Environment variables for runtime configurations and versioning
ENV FLUENTBIT_VERSION=${FLUENTBIT_VERSION:-"3.0.6"} \
S6_OVERLAY_VERSION=${S6_OVERLAY_VERSION:-"3.1.6.2"} \
YQ_VERSION=${YQ_VERSION:-"v4.42.1"} \
ZABBIX_VERSION=${ZABBIX_VERSION:-"6.4.15"} \
DOAS_VERSION=${DOAS_VERSION:-"v6.8.2"} \
DEBUG_MODE=FALSE \
TIMEZONE=Etc/GMT \
CONTAINER_ENABLE_SCHEDULING=TRUE \
CONTAINER_SCHEDULING_BACKEND=cron \
CONTAINER_ENABLE_MESSAGING=TRUE \
CONTAINER_MESSAGING_BACKEND=msmtp \
CONTAINER_ENABLE_MONITORING=TRUE \
CONTAINER_MONITORING_BACKEND=zabbix \
CONTAINER_ENABLE_LOGSHIPPING=FALSE \
S6_GLOBAL_PATH="/command:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/sbin" \
S6_KEEP_ENV=1 \
S6_CMD_WAIT_FOR_SERVICES_MAXTIME=0 \
IMAGE_NAME="focela/alpine" \
IMAGE_REPO_URL="https://github.com/focela/alpine/"
# Determine the version of Alpine Linux and configure related parameters
RUN case "$(cat /etc/os-release | grep VERSION_ID | cut -d = -f 2 | cut -d . -f 1,2)" in \
"3.5" | "3.6" ) no_upx=true ;; \
*) busybox_extras="busybox-extras" ;; \
esac ; \
\
# Configure Zabbix Agent 2 and Fluent Bit for specific versions
case "$(cat /etc/os-release | grep VERSION_ID | cut -d = -f 2 | cut -d . -f 1,2 | cut -d _ -f 1)" in \
3.11 | 3.12 | 3.13 | 3.14 | 3.15 | 3.16 | 3.17* | 3.18* | 3.19* | 3.20* | 3.21* | edge ) zabbix_args=" --enable-agent2 " ; zabbix_agent2=true ; fluentbit_make=true ; echo "** Building Zabbix Agent 2" ; echo "** Building Fluent Bit" ;; \
*) : ;; \
esac ; \
\
# Set Go version for older Alpine versions
case "$(cat /etc/os-release | grep VERSION_ID | cut -d = -f 2 | cut -d . -f 1,2 | cut -d _ -f 1)" in \
3.11 | 3.12 | 3.13 | 3.14 ) export GOLANG_VERSION=1.19.5 ; yq=false ;; \
*) : ;; \
esac ; \
\
# Configure `yq` tool availability based on Alpine versions
case "$(cat /etc/os-release | grep VERSION_ID | cut -d = -f 2 | cut -d . -f 1,2 | cut -d _ -f 1)" in \
3.5 | 3.6 | 3.7 | 3.8 | 3.9 | 3.10 | 3.11 | 3.12 | 3.13 | 3.14 | 3.15 | 3.16 ) yq=false ;; \
*) : ;; \
esac ; \
\
# Configure FTS (file traversal system) based on Alpine version
case "$(cat /etc/os-release | grep VERSION_ID | cut -d = -f 2 | cut -d . -f 1,2 | cut -d _ -f 1)" in \
3.5 | 3.6 | 3.7 | 3.8 | 3.9 | 3.10 | 3.11 | 3.12 | 3.13 | 3.14 | 3.15 | 3.16 ) fts=fts ;; \
3.17 | 3.18* | 3.19* | 3.20* | 3.21* ) fts=musl-fts ;; \
*) : ;; \
esac ; \
\
# Configure SSL library based on Alpine version
case "$(cat /etc/os-release | grep VERSION_ID | cut -d = -f 2 | cut -d . -f 1,2 | cut -d _ -f 1)" in \
3.5 | 3.6 | 3.7 | 3.8 | 3.9 | 3.10 | 3.11 | 3.12 | 3.13 | 3.14 | 3.15 | 3.16 ) alpine_ssl=libressl ;; \
3.17* | 3.18* | 3.19* | 3.20* | 3.21* ) alpine_ssl=openssl ;; \
*) : ;; \
esac ; \
\
# Detect architecture and configure UPX
apkArch="$(apk --print-arch)" ; \
case "$apkArch" in \
x86_64) upx=upx ;; \
*) : ;; \
esac ; \
\
# Exclude UPX for older Alpine versions
case "$(cat /etc/os-release | grep VERSION_ID | cut -d = -f 2 | cut -d . -f 1,2)" in \
"3.5" | "3.6") upx="" ;; \
esac ; \
\
# Configure `doas` utility for specific Alpine versions
case "$(cat /etc/os-release | grep VERSION_ID | cut -d = -f 2 | cut -d . -f 1,2)" in \
"3.5" | "3.6" | "3.7" | "3.8" ) build_doas=true ;; \
*) doas_package="doas" ;; \
esac ; \
\
# Configure Zstandard (zstd) package availability
case "$(cat /etc/os-release | grep VERSION_ID | cut -d = -f 2 | cut -d . -f 1,2)" in \
"3.5" | "3.8" ) zstd_package="" ;; \
*) zstd_package=zstd ;; \
esac ; \
\
# Enable error tracing and update system packages
set -ex && \
apk update && \
apk upgrade && \
\
# Add core utilities
apk add -t .base-rundeps \
acl \
${alpine_ssl} \
bash \
bc \
${busybox_extras} \
curl \
${doas_package} \
fail2ban \
${fts} \
git \
grep \
iptables \
iputils \
jq \
less \
libgcc \
$(apk search libssl1* -q) \
logrotate \
msmtp \
nano \
pcre \
s6 \
sudo \
tzdata \
yaml \
${zstd_package} && \
\
# Add dependencies for building Go projects
apk add -t .golang-build-deps \
go \
musl-dev && \
\
# Add dependencies for building Zabbix
apk add -t .zabbix-build-deps \
alpine-sdk \
autoconf \
automake \
binutils \
coreutils \
g++ \
openssl-dev \
make \
pcre-dev \
zlib-dev \
${additional_packages} \
${upx} && \
\
# Add dependencies for building Fluent Bit
apk add -t .fluentbit-build-deps \
bison \
cmake \
flex \
${fts}-dev \
linux-headers \
openssl-dev \
snappy-dev \
yaml-dev && \
\
# Add gettext and configure environment substitution
apk add gettext && \
mv /usr/bin/envsubst /usr/local/bin/envsubst && \
\
# Configure timezone
cp -R /usr/share/zoneinfo/${TIMEZONE} /etc/localtime && \
echo "${TIMEZONE}" > /etc/timezone && \
\
# Configure sudo behavior
echo "Set disable_coredump false" > /etc/sudo.conf && \
\
# Build Doas utility if required
if [ "$build_doas" = "true" ] ; then \
mkdir -p /usr/src/doas && \
curl -sSL https://github.com/Duncaen/OpenDoas/archive/${DOAS_VERSION}.tar.gz | tar xfz - --strip 1 -C /usr/src/doas && \
cd /usr/src/doas && \
./configure --prefix=/usr \
--enable-static \
--without-pam && \
make && \
make install ; \
fi && \
\
# Install and set up Golang environment if Zabbix Agent 2 is enabled
if [ "$zabbix_agent2" = "true" ] ; then \
mkdir -p /usr/src/golang && \
curl -sSL https://dl.google.com/go/go${GOLANG_VERSION}.src.tar.gz | tar xvfz - --strip 1 -C /usr/src/golang && \
cd /usr/src/golang/src/ && \
./make.bash 1>/dev/null && \
export GOROOT=/usr/src/golang/ && \
export PATH="/usr/src/golang/bin:$PATH" ; \
fi && \
\
# Compile and install YQ if enabled
if [ "$yq" != "false" ] ; then \
git clone https://github.com/mikefarah/yq /usr/src/yq && \
cd /usr/src/yq && \
git checkout ${YQ_VERSION} && \
go build && \
cp -R yq /usr/local/bin ; \
fi && \
\
# Setup Zabbix user and directories
addgroup -g 10050 zabbix && \
adduser -S -D -H -h /dev/null -s /sbin/nologin -G zabbix -u 10050 zabbix && \
mkdir -p /etc/zabbix && \
mkdir -p /etc/zabbix/zabbix_agentd.conf.d && \
mkdir -p /var/lib/zabbix && \
mkdir -p /var/lib/zabbix/enc && \
mkdir -p /var/lib/zabbix/modules && \
mkdir -p /var/lib/zabbix/run && \
mkdir -p /var/log/zabbix && \
chown --quiet -R zabbix:root /etc/zabbix && \
chown --quiet -R zabbix:root /var/lib/zabbix && \
chown --quiet -R zabbix:root /var/log/zabbix && \
chmod -R 770 /var/lib/zabbix/run && \
\
# Download and compile Zabbix source code
mkdir -p /usr/src/zabbix && \
curl -sSL https://github.com/zabbix/zabbix/archive/${ZABBIX_VERSION}.tar.gz | tar xfz - --strip 1 -C /usr/src/zabbix && \
cd /usr/src/zabbix && \
./bootstrap.sh 1>/dev/null && \
export CFLAGS="-fPIC -pie -Wl,-z,relro -Wl,-z,now" && \
sed -i "s|CGO_CFLAGS=\"\${CGO_CFLAGS}\"| CGO_CFLAGS=\"-D_LARGEFILE64_SOURCE \${CGO_CFLAGS}\"|g" /usr/src/zabbix/src/go/Makefile.am && \
\
# Configure Zabbix compilation
./configure \
--prefix=/usr \
--silent \
--sysconfdir=/etc/zabbix \
--libdir=/usr/lib/zabbix \
--datadir=/usr/lib \
--enable-agent ${zabbix_args} \
--enable-ipv6 \
--with-openssl && \
\
# Build Zabbix binaries
make -j"$(nproc)" -s 1>/dev/null && \
cp src/zabbix_agent/zabbix_agentd /usr/sbin/zabbix_agentd && \
cp src/zabbix_get/zabbix_get /usr/sbin/zabbix_get && \
cp src/zabbix_sender/zabbix_sender /usr/sbin/zabbix_sender && \
if [ "$zabbix_agent2" = "true" ] ; then \
cp src/go/bin/zabbix_agent2 /usr/sbin/zabbix_agent2 ; \
fi && \
\
# Optimize Zabbix binaries
strip /usr/sbin/zabbix_agentd && \
strip /usr/sbin/zabbix_get && \
strip /usr/sbin/zabbix_sender && \
if [ "$zabbix_agent2" = "true" ] ; then \
strip /usr/sbin/zabbix_agent2 ; \
fi && \
if [ "$apkArch" = "x86_64" ] && [ "$no_upx" != "true" ]; then \
upx /usr/sbin/zabbix_agentd && \
upx /usr/sbin/zabbix_get && \
upx /usr/sbin/zabbix_sender ; \
if [ "$zabbix_agent2" = "true" ]; then \
upx /usr/sbin/zabbix_agent2 ; \
fi ; \
fi && \
\
# Clean up Zabbix source files
rm -rf /usr/src/zabbix && \
\
# Compile Fluent Bit from source
mkdir -p /usr/src/fluentbit && \
curl -sSL https://github.com/fluent/fluent-bit/archive/v${FLUENTBIT_VERSION}.tar.gz | tar xfz - --strip 1 -C /usr/src/fluentbit && \
cd /usr/src/fluentbit && \
\
# Apply necessary patches for Alpine Linux compatibility
curl -sSL https://git.alpinelinux.org/aports/plain/testing/fluent-bit/chunkio-static-lib-fts.patch | patch -p1 && \
curl -sSL https://git.alpinelinux.org/aports/plain/testing/fluent-bit/exclude-luajit.patch | patch -p1 && \
curl -sSL https://git.alpinelinux.org/aports/plain/testing/fluent-bit/musl-strerror_r.patch | patch -p1 && \
\
# Configure and compile Fluent Bit
cmake \
-DCMAKE_INSTALL_PREFIX=/usr \
-DCMAKE_INSTALL_LIBDIR=lib \
-DCMAKE_BUILD_TYPE=None \
-DFLB_AWS=No \
-DFLB_BACKTRACE=No \
-DFLB_CORO_STACK_SIZE=24576 \
-DFLB_DEBUG=No \
-DFLB_EXAMPLES=No \
-DFLB_FILTER_AWS=No \
-DFLB_FILTER_ECS=No \
-DFLB_FILTER_NIGHTFALL=No \
-DFLB_FILTER_GEOIP2=No \
-DFLB_FILTER_KUBERNETES=No \
-DFLB_FILTER_TENSORFLOW=No \
-DFLB_FILTER_WASM=No \
-DFLB_HTTP_SERVER=Yes \
-DFLB_IN_CALYPTIA_FLEET=No \
-DFLB_IN_COLLECTD=No \
-DFLB_IN_CPU=No \
-DFLB_IN_DISK=No \
-DFLB_IN_DOCKER=No \
-DFLB_IN_DOCKER_EVENTS=No \
-DFLB_IN_EMITTER=Yes \
-DFLB_IN_EXEC=Yes \
-DFLB_IN_EXEC_WASI=No \
-DFLB_IN_ELASTICSEARCH=No \
-DFLB_IN_HEALTH=No \
-DFLB_IN_KAFKA=Yes \
-DFLB_IN_KMSG=No \
-DFLB_IN_KUBERNETES_EVENTS=No \
-DFLB_IN_MEM=No \
-DFLB_IN_MQTT=No \
-DFLB_IN_NETIF=No \
-DFLB_IN_NGINX_EXPORTER_METRICS=No \
-DFLB_IN_NODE_EXPORTER_METRICS=No \
-DFLB_IN_OPENTELEMETRY=No \
-DFLB_IN_PODMAN_METRICS=No \
-DFLB_IN_PROCESS_EXPORTER_METRICS=No \
-DFLB_IN_PROC=No \
-DFLB_IN_PROMETHEUS_REMOTE_WRITE=Yes \
-DFLB_IN_PROMETHEUS_SCRAPE=No \
-DFLB_IN_SERIAL=No \
-DFLB_IN_SPLUNK=No \
-DFLB_IN_STATSD=No \
-DFLB_IN_SYSTEMD=No \
-DFLB_IN_SYSLOG=No \
-DFLB_IN_TCP=No \
-DFLB_IN_UDP=No \
-DFLB_IN_UNIX_SOCKET=No \
-DFLB_IN_THERMAL=No \
-DFLB_IN_WINLOG=No \
-DFLB_IN_WINDOWS_EXPORTER_METRICS=No \
-DFLB_IN_WINSTAT=No \
-DFLB_JEMALLOC=Yes \
-DFLB_LUAJIT=No \
-DFLB_PROCESSOR_OPENTELEMETRY_ENVELOPE=No \
-DFLB_PROCESSOR_SQL=No \
-DFLB_OUT_AZURE=No \
-DFLB_OUT_AZURE_BLOB=No \
-DFLB_OUT_AZURE_KUSTO=No \
-DFLB_OUT_AZURE_LOGS_INGESTION=No \
-DFLB_OUT_BIGQUERY=No \
-DFLB_OUT_CALYPTIA=No \
-DFLB_OUT_CHRONICLE=No \
-DFLB_OUT_CLOUDWATCH_LOGS=No \
-DFLB_OUT_COUNTER=No \
-DFLB_OUT_DATADOG=No \
-DFLB_OUT_ES=No \
-DFLB_OUT_FLOWCOUNTER=No \
-DFLB_OUT_GELF=No \
-DFLB_OUT_INFLUXDB=No \
-DFLB_OUT_KAFKA=No \
-DFLB_OUT_KAFKA_REST=No \
-DFLB_OUT_KINESIS_FIREHOSE=No \
-DFLB_OUT_KINESIS_STREAMS=No \
-DFLB_OUT_LIB=No \
-DFLB_OUT_LOGDNA=No \
-DFLB_OUT_NATS=No \
-DFLB_OUT_NRLOGS=No \
-DFLB_OUT_OPENSEARCH=No \
-DFLB_OUT_ORACLE_LOG_ANALYTICS=No \
-DFLB_OUT_OPENTELEMETRY=No \
-DFLB_OUT_PROMETHEUS_EXPORTER=No \
-DFLB_OUT_PROMETHEUS_REMOTE_WRITE=No \
-DFLB_OUT_PGSQL=No \
-DFLB_OUT_PLOT=No \
-DFLB_OUT_S3=No \
-DFLB_OUT_SKYWALKING=No \
-DFLB_OUT_SLACK=No \
-DFLB_OUT_SPLUNK=No \
-DFLB_OUT_STACKDRIVER=No \
-DFLB_OUT_TCP=No \
-DFLB_OUT_TD=No \
-DFLB_OUT_UDP=No \
-DFLB_OUT_VIVO_EXPORTER=No \
-DFLB_OUT_WEBSOCKET=No \
-DFLB_RELEASE=Yes \
-DFLB_SHARED_LIB=No \
-DFLB_SIGNV4=No \
-DFLB_SMALL=Yes \
-DFLB_WASM=No \
. && \
\
# Build and install Fluent Bit
if [ "$fluentbit_make" = "true" ]; then \
if [ "$apkArch" = "x86_64" ]; then \
make -j"$(nproc)" && \
make install && \
mv /usr/etc/fluent-bit /etc/fluent-bit && \
mkdir -p /etc/fluent-bit/parsers.d && \
mkdir -p /etc/fluent-bit/conf.d && \
strip /usr/bin/fluent-bit; \
if [ "$no_upx" != "true" ]; then \
upx /usr/bin/fluent-bit; \
fi; \
fi; \
fi ; \
\
# Configure Fail2ban
addgroup -g 65500 fail2ban && \
addgroup zabbix fail2ban && \
rm -rf /var/run/fail2ban && \
mkdir -p /var/run/fail2ban && \
chown -R root:fail2ban /var/run/fail2ban && \
setfacl -d -m g:fail2ban:rwx /var/run/fail2ban && \
find /etc/fail2ban/action.d/ -type f -not -name 'iptables*.conf' -delete && \
rm -rf /etc/fail2ban/filter.d && \
mkdir -p /etc/fail2ban/filter.d && \
rm -rf /etc/fail2ban/fail2ban.d && \
rm -rf /etc/fail2ban/jail.d/* && \
rm -rf /etc/fail2ban/paths* && \
\
# Perform final cleanup
mkdir -p /etc/logrotate.d && \
mkdir -p /etc/doas.d && \
apk del --purge \
.fluentbit-build-deps \
.golang-build-deps \
.zabbix-build-deps \
gettext && \
rm -rf /etc/*.apk.new && \
rm -rf /etc/logrotate.d/* && \
rm -rf /etc/doas.conf /etc/doas.d/* && \
rm -rf /root/.cache && \
rm -rf /root/go && \
rm -rf /tmp/* && \
rm -rf /usr/src/* && \
rm -rf /var/cache/apk/* && \
\
# Install S6 Overlay
apkArch="$(apk --print-arch)" && \
case "$apkArch" in \
x86_64) s6Arch='x86_64' ;; \
armv7) s6Arch='armhf' ;; \
armhf) s6Arch='armhf' ;; \
aarch64) s6Arch='aarch64' ;; \
*) echo >&2 "Error: unsupported architecture ($apkArch)"; exit 1 ;; \
esac && \
curl -sSL https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-noarch.tar.xz | tar xvpfJ - -C / && \
curl -sSL https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-${s6Arch}.tar.xz | tar xvpfJ - -C / && \
curl -sSL https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-symlinks-noarch.tar.xz | tar xvpfJ - -C / && \
curl -sSL https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-symlinks-arch.tar.xz | tar xvpfJ - -C / && \
mkdir -p /etc/cont-init.d && \
mkdir -p /etc/cont-finish.d && \
mkdir -p /etc/services.d && \
chmod -R 0755 /etc/cont-init.d /etc/cont-finish.d /etc/services.d && \
\
# Modify S6 Overlay scripts
sed -i "s|echo|: # echo |g" /package/admin/s6-overlay/etc/s6-rc/scripts/cont-init && \
sed -i "s|echo|: # echo |g" /package/admin/s6-overlay/etc/s6-rc/scripts/cont-finish && \
sed -i "s|echo ' (no readiness notification)'|: # echo ' (no readiness notification)'|g" /package/admin/s6-overlay/etc/s6-rc/scripts/services-up && \
sed -i "s|s6-echo -n|: # s6-echo -n|g" /package/admin/s6-overlay/etc/s6-rc/scripts/services-up && \
sed -i "s|v=2|v=1|g" /package/admin/s6-overlay/etc/s6-linux-init/skel/rc.init && \
sed -i "s|v=2|v=1|g" /package/admin/s6-overlay/etc/s6-linux-init/skel/rc.shutdown
# Set shell to Bash
SHELL ["/bin/bash", "-c"]
# Networking configuration
# Open TCP ports 2020 and 10050
EXPOSE 2020/TCP 10050/TCP
# Entrypoint configuration
# Use S6 Overlay init system as entrypoint
ENTRYPOINT ["/init"]
# Add application folders from the local build context
COPY install/ /