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docker가 설치된 상태에서 Dockerfile이라는 이름으로 파일을 아래와 같이 만든후 아래의 명령어를 실행하면 된다.

$ docker build -t 태그명 .

샘플 Dockerfile

엘라스틱서치 5.2.0 이미지를 만드는 Dockerfile이다.

    FROM openjdk:8-jre

    # grab gosu for easy step-down from root
    ENV GOSU_VERSION 1.7
    RUN set -x \
        && wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
        && wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture).asc" \
        && export GNUPGHOME="$(mktemp -d)" \
        && gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
        && gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
        && rm -r "$GNUPGHOME" /usr/local/bin/gosu.asc \
        && chmod +x /usr/local/bin/gosu \
        && gosu nobody true

    RUN set -ex; \
    # https://artifacts.elastic.co/GPG-KEY-elasticsearch
        key='46095ACC8548582C1A2699A9D27D666CD88E42B4'; \
        export GNUPGHOME="$(mktemp -d)"; \
        gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
        gpg --export "$key" > /etc/apt/trusted.gpg.d/elastic.gpg; \
        rm -r "$GNUPGHOME"; \
        apt-key list

    # https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-repositories.html
    # https://www.elastic.co/guide/en/elasticsearch/reference/5.0/deb.html
    RUN set -x \
        && apt-get update && apt-get install -y --no-install-recommends apt-transport-https && rm -rf /var/lib/apt/lists/* \
        && echo 'deb https://artifacts.elastic.co/packages/5.x/apt stable main' > /etc/apt/sources.list.d/elasticsearch.list

    ENV ELASTICSEARCH_VERSION 5.2.0
    ENV ELASTICSEARCH_DEB_VERSION 5.2.0

    RUN set -x \
        \
    # don't allow the package to install its sysctl file (causes the install to fail)
    # Failed to write '262144' to '/proc/sys/vm/max_map_count': Read-only file system
        && dpkg-divert --rename /usr/lib/sysctl.d/elasticsearch.conf \
        \
        && apt-get update \
        && apt-get install -y --no-install-recommends "elasticsearch=$ELASTICSEARCH_DEB_VERSION" \
        && rm -rf /var/lib/apt/lists/*

    ENV PATH /usr/share/elasticsearch/bin:$PATH

    WORKDIR /usr/share/elasticsearch

    RUN set -ex \
        && for path in \
            ./data \
            ./logs \
            ./config \
            ./config/scripts \
        ; do \
            mkdir -p "$path"; \
            chown -R elasticsearch:elasticsearch "$path"; \
        done

    COPY config ./config

    VOLUME /usr/share/elasticsearch/data

    COPY docker-entrypoint.sh /

    EXPOSE 9200 9300
    ENTRYPOINT ["/docker-entrypoint.sh"]
    CMD ["elasticsearch"]