This answer is for docker-compose version 2 and it also works on version 3 You can still access the data when you use depends_on. If you look at docker docs Docker Compose and Django, you still can access the database like this: version: ‘2’ services: db: image: postgres web: build: . command: python manage.py runserver … Read more
Remove star from COPY, with this Dockerfile: FROM ubuntu COPY files/ /files/ RUN ls -la /files/* Structure is there: $ docker build . Sending build context to Docker daemon 5.632 kB Sending build context to Docker daemon Step 0 : FROM ubuntu —> d0955f21bf24 Step 1 : COPY files/ /files/ —> 5cc4ae8708a6 Removing intermediate container … Read more
The trick is to use useradd instead of its interactive wrapper adduser. I usually create users with: RUN useradd -ms /bin/bash newuser which creates a home directory for the user and ensures that bash is the default shell. You can then add: USER newuser WORKDIR /home/newuser to your dockerfile. Every command afterwards as well as … Read more
Create file .dockerignore in your docker build context directory (so in this case, most likely a directory that is a parent to node_modules) with one line in it: **/node_modules although you probably just want: node_modules Info about dockerignore: https://docs.docker.com/engine/reference/builder/#dockerignore-file
How to build an image with custom name without using yml file: docker build -t image_name . How to run a container with custom name: docker run -d –name container_name image_name
RUN is an image build step, the state of the container after a RUN command will be committed to the container image. A Dockerfile can have many RUN steps that layer on top of one another to build the image. CMD is the command the container executes by default when you launch the built image. … Read more
Dockerfile A Dockerfile is a simple text file that contains the commands a user could call to assemble an image. Example, Dockerfile FROM ubuntu:latest MAINTAINER john doe RUN apt-get update RUN apt-get install -y python python-pip wget RUN pip install Flask ADD hello.py /home/hello.py WORKDIR /home Docker Compose Docker Compose is a tool for defining … Read more
You can use # at the beginning of a line to start a comment (whitespaces before # are allowed): # do some stuff RUN apt-get update \ # install some packages && apt-get install -y cron #‘s in the middle of a string are passed to the command itself, e.g.: RUN echo ‘we are running … Read more
You may need to switch your docker repo to private before docker push. Thanks to the answer provided by Dean Wu and this comment by ses, before pushing, remember to log out, then log in from the command line to your docker hub account # you may need log out first `docker logout` ref. https://stackoverflow.com/a/53835882/248616 … Read more
You can pass environment variables to your containers with the -e flag. An example from a startup script: sudo docker run -d -t -i -e REDIS_NAMESPACE=’staging’ \ -e POSTGRES_ENV_POSTGRES_PASSWORD=’foo’ \ -e POSTGRES_ENV_POSTGRES_USER=’bar’ \ -e POSTGRES_ENV_DB_NAME=’mysite_staging’ \ -e POSTGRES_PORT_5432_TCP_ADDR=’docker-db-1.hidden.us-east-1.rds.amazonaws.com’ \ -e SITE_URL=’staging.mysite.com’ \ -p 80:80 \ –link redis:redis \ –name container_name dockerhub_id/image_name Or, if you don’t … Read more