Add influxdb 2.0 alpine image. (#446)

Author: danxmoran

influxdb/2.0/alpine/Dockerfile

@@ -0,0 +1,75 @@
+FROM alpine:3.13
+
+RUN echo 'hosts: files dns' >> /etc/nsswitch.conf
+RUN apk add --no-cache tzdata bash ca-certificates gnupg run-parts && \
+    update-ca-certificates
+
+RUN addgroup -S -g 1000 influxdb && \
+    adduser -S -G influxdb -u 1000 -h /home/influxdb -s /bin/sh influxdb && \
+    mkdir -p /home/influxdb && \
+    chown -R influxdb:influxdb /home/influxdb
+
+# Install gosu for easy step-down from root.
+# https://github.com/tianon/gosu/releases
+ENV GOSU_VER 1.12
+RUN set -eux; \
+    ARCH=$(arch) && \
+    if [ ${ARCH} = x86_64 ]; then \
+        ARCH=amd64; \
+    elif [ ${ARCH} = aarch64 ]; then \
+        ARCH=arm64; \
+    else \
+        echo "Unsupported architecture: ${ARCH}" && exit 1; \
+    fi && \
+	wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VER/gosu-$ARCH"; \
+	wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VER/gosu-$ARCH.asc"; \
+	export GNUPGHOME="$(mktemp -d)"; \
+	gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4; \
+	gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu; \
+	gpgconf --kill all; \
+	rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc; \
+	chmod +x /usr/local/bin/gosu; \
+	gosu --version; \
+	gosu nobody true
+
+ENV INFLUXDB_VERSION 2.0.4
+# TODO: Update this to use a 'real' release.
+RUN set -eux && \
+    ARCH=$(arch) && \
+    if [ ${ARCH} = x86_64 ]; then \
+        ARCH=amd64; \
+    elif [ ${ARCH} = aarch64 ]; then \
+        ARCH=arm64; \
+    else \
+        echo "Unsupported architecture: ${ARCH}" && exit 1; \
+    fi && \
+    wget --no-verbose https://dl.influxdata.com/platform/nightlies/influxdb2_nightly_linux_${ARCH}.tar.gz.asc && \
+    wget --no-verbose https://dl.influxdata.com/platform/nightlies/influxdb2_nightly_linux_${ARCH}.tar.gz && \
+    export GNUPGHOME="$(mktemp -d)" && \
+    echo "disable-ipv6" >> $GNUPGHOME/dirmngr.conf && \
+    gpg --keyserver keys.openpgp.org --recv-keys 8C2D403D3C3BDB81A4C27C883C3E4B7317FFE40A && \
+    gpg --batch --verify influxdb2_nightly_linux_${ARCH}.tar.gz.asc influxdb2_nightly_linux_${ARCH}.tar.gz && \
+    tar xzf influxdb2_nightly_linux_${ARCH}.tar.gz && \
+    cp influxdb2_nightly_linux_${ARCH}/influx* /usr/local/bin/ && \
+    rm -rf "$GNUPGHOME" influxdb2.key influxdb2_nightly_${ARCH}* && \
+    influxd version && \
+    influx version
+
+# Create standard directories expected by the entry-point.
+RUN mkdir /docker-entrypoint-initdb.d && \
+    mkdir -p /var/lib/influxdb2 && \
+    chown -R influxdb:influxdb /var/lib/influxdb2 && \
+    mkdir -p /etc/influxdb2 && \
+    chown -R influxdb:influxdb /etc/influxdb2
+VOLUME /var/lib/influxdb2 /etc/influxdb2
+
+COPY default-config.yml /etc/defaults/influxdb2/config.yml
+COPY entrypoint.sh /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["influxd"]
+
+EXPOSE 8086
+
+ENV INFLUX_CONFIGS_PATH /etc/influxdb2/influx-configs
+ENV INFLUXD_INIT_PORT 9999

influxdb/2.0/alpine/default-config.yml

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+bolt-path: /var/lib/influxdb2/influxd.bolt
+engine-path: /var/lib/influxdb2/engine
+nats-port: 4222