我有一个docker-compose文件,部分内容如下:
nginx:
container_name: ${NGINX_CONTAINER_NAME}
ports:
- ${NGINX_HTTP_PORT1}:${NGINX_HTTP_PORT2}
- ${NGINX_HTTPS_PORT1}:${NGINX_HTTPS_PORT2}
build:
dockerfile: Dockerfile
args:
- NGINX_VERSION=${NGINX_VERSION}
volumes:
- ${NGINX_CONF_DIR:-./nginx}:/etc/nginx/conf.d
- ${NGINX_LOG_DIR:-./logs/nginx}:/var/log/nginx
- ${WORDPRESS_DATA_DIR:-./wordpress}:/var/www/html
depends_on:
- wordpress
restart: always
您可以看到,我正在尝试将一个名为NGINX_VERSION的变量传递到Dockerfile中。 以下是.env文件的内容:
# nginx
NGINX_VERSION=1.21.3
NGINX_HTTP_PORT1=8085
NGINX_HTTP_PORT2=8085
NGINX_HTTPS_PORT1=443
NGINX_HTTPS_PORT2=443
NGINX_CONTAINER_NAME=dev_nginx
以下是有效的Dockerfile示例:
FROM nginx:1.21.3
RUN apt-get update \
&& apt-get -y install openssl \
&& apt-get -y install vim
RUN mkdir -p /etc/openssl/certs
RUN mkdir -p /etc/nginx/snippets
RUN openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/openssl/nginx-selfsigned.key -out /etc/openssl/nginx-selfsigned.crt -subj "/C=US/ST=NY/L=NY/O=ACME/OU=CD/CN=WPDeveloper"
问题
当我在 Dockerfile 中更改图像名称,使其如下所示:
FROM nginx:$NGINX_VERSION
或者这样:
FROM nginx:${NGINX_VERSION}
I get the following error:
failed to solve: rpc error: code = Unknown desc = failed to solve with frontend dockerfile.v0: failed to create LLB definition: failed to parse stage name "nginx:": invalid reference format
当我在Dockerfile中硬编码版本号时,一切都正常。此外,如果有帮助的话,我通过运行以下命令验证env中的值是否被读取:
docker-compose -f .\docker-compose.yml config
部分输出结果如下 - 请注意它找到了正确的NGINX版本值
nginx:
build:
dockerfile: Dockerfile
args:
NGINX_VERSION: 1.21.3
container_name: dev_nginx
depends_on:
wordpress:
condition: service_started
networks:
default: null
ports:
- mode: ingress
target: 8085
published: 8085
- mode: ingress
target: 443
published: 443
protocol: tcp
restart: always
volumes:
source: ./nginx
target: /etc/nginx/conf.d
bind:
create_host_path: true
- type: bind
source: ./logs/nginx
target: /var/log/nginx
bind:
create_host_path: true
- type: bind
source: ./wordpress
target: /var/www/html
bind:
create_host_path: true
任何建议都将不胜感激。
FROM
行之前声明了ARG
?请参考 Use --build-arg value in Dockerfile FROM parameter 的示例。 - David Maze