目录

Docker - 02 创建镜像 Dockerfile 指令速查表

docker build 命令

Dockerfile 指令速查表

.dockerignore 文件

例子 - nginx 镜像

FROM debian:stretch-slimLABEL maintainer="NGINX Docker Maintainers 
    
     "ENV NGINX_VERSION 1.15.2-1~stretchENV NJS_VERSION   1.15.2.0.2.2-1~stretchRUN set -x \	&& apt-get update \	&& apt-get install --no-install-recommends --no-install-suggests -y gnupg1 apt-transport-https ca-certificates \	&& \	NGINX_GPGKEY=573BFD6B3D8FBC641079A6ABABF5BD827BD9BF62; \	found=''; \	for server in \		ha.pool.sks-keyservers.net \		hkp://keyserver.ubuntu.com:80 \		hkp://p80.pool.sks-keyservers.net:80 \		pgp.mit.edu \	; do \		echo "Fetching GPG key $NGINX_GPGKEY from $server"; \		apt-key adv --keyserver "$server" --keyserver-options timeout=10 --recv-keys "$NGINX_GPGKEY" && found=yes && break; \	done; \	test -z "$found" && echo >&2 "error: failed to fetch GPG key $NGINX_GPGKEY" && exit 1; \	apt-get remove --purge --auto-remove -y gnupg1 && rm -rf /var/lib/apt/lists/* \	&& dpkgArch="$(dpkg --print-architecture)" \	&& nginxPackages=" \		nginx=${NGINX_VERSION} \		nginx-module-xslt=${NGINX_VERSION} \		nginx-module-geoip=${NGINX_VERSION} \		nginx-module-image-filter=${NGINX_VERSION} \		nginx-module-njs=${NJS_VERSION} \	" \	&& case "$dpkgArch" in \		amd64|i386) \# arches officialy built by upstream			echo "deb https://nginx.org/packages/mainline/debian/ stretch nginx" >> /etc/apt/sources.list.d/nginx.list \			&& apt-get update \			;; \		*) \# we're on an architecture upstream doesn't officially build for# let's build binaries from the published source packages			echo "deb-src https://nginx.org/packages/mainline/debian/ stretch nginx" >> /etc/apt/sources.list.d/nginx.list \			\# new directory for storing sources and .deb files			&& tempDir="$(mktemp -d)" \			&& chmod 777 "$tempDir" \# (777 to ensure APT's "_apt" user can access it too)			\# save list of currently-installed packages so build dependencies can be cleanly removed later			&& savedAptMark="$(apt-mark showmanual)" \			\# build .deb files from upstream's source packages (which are verified by apt-get)			&& apt-get update \			&& apt-get build-dep -y $nginxPackages \			&& ( \				cd "$tempDir" \				&& DEB_BUILD_OPTIONS="nocheck parallel=$(nproc)" \					apt-get source --compile $nginxPackages \			) \# we don't remove APT lists here because they get re-downloaded and removed later			\# reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies# (which is done after we install the built packages so we don't have to redownload any overlapping dependencies)			&& apt-mark showmanual | xargs apt-mark auto > /dev/null \			&& { [ -z "$savedAptMark" ] || apt-mark manual $savedAptMark; } \			\# create a temporary local APT repo to install from (so that dependency resolution can be handled by APT, as it should be)			&& ls -lAFh "$tempDir" \			&& ( cd "$tempDir" && dpkg-scanpackages . > Packages ) \			&& grep '^Package: ' "$tempDir/Packages" \			&& echo "deb [ trusted=yes ] file://$tempDir ./" > /etc/apt/sources.list.d/temp.list \# work around the following APT issue by using "Acquire::GzipIndexes=false" (overriding "/etc/apt/apt.conf.d/docker-gzip-indexes")#   Could not open file /var/lib/apt/lists/partial/_tmp_tmp.ODWljpQfkE_._Packages - open (13: Permission denied)#   ...#   E: Failed to fetch store:/var/lib/apt/lists/partial/_tmp_tmp.ODWljpQfkE_._Packages  Could not open file /var/lib/apt/lists/partial/_tmp_tmp.ODWljpQfkE_._Packages - open (13: Permission denied)			&& apt-get -o Acquire::GzipIndexes=false update \			;; \	esac \	\	&& apt-get install --no-install-recommends --no-install-suggests -y \						$nginxPackages \						gettext-base \	&& apt-get remove --purge --auto-remove -y apt-transport-https ca-certificates && rm -rf /var/lib/apt/lists/* /etc/apt/sources.list.d/nginx.list \	\# if we have leftovers from building, let's purge them (including extra, unnecessary build deps)	&& if [ -n "$tempDir" ]; then \		apt-get purge -y --auto-remove \		&& rm -rf "$tempDir" /etc/apt/sources.list.d/temp.list; \	fi# forward request and error logs to docker log collectorRUN ln -sf /dev/stdout /var/log/nginx/access.log \	&& ln -sf /dev/stderr /var/log/nginx/error.logEXPOSE 80STOPSIGNAL SIGTERMCMD ["nginx", "-g", "daemon off;"]复制代码
    

参考

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