containers

I'm trying to launch postgres in IBM containers. I have just created volume by: $ cf ic volume create pgdata Then mount it: $ cf ic run --volume pgdata:/var/pgsql -p 22 registry.ng.bluemix.net/ruimo/pgsql944-cli After logging into container through ssh, I found the mounted directory is owned by root: drwxr-xr-x 3 root root 4096 Jul 8 08:20 pgsql Since postgres does not permit to run by root, I want to change the owner of this directory. But I cannot change the owner of this directory: # chown postgres:postgres pgsql chown: changing ownership of 'pgsql': Permission denied Is it possible to

I have some issue with ng serve in my docker container running by docker-compose . Dockerfile FROM node:7.1 RUN mkdir -p /usr/src/app WORKDIR /usr/src/app COPY package.json /usr/src/app RUN npm install RUN npm install -g angular-cli COPY . /usr/src/app EXPOSE 4200 CMD [ "npm", "start" ]' And my docker-compose.yml web: build: . ports: - '8089:4200' volumes: - .:/usr/src/app/ environment: - NODE_ENV=dev command: bash -c "npm start" Everything works great when I run it but the editing file does not rise reload of application. File is changed, I'm sure because I check it by ssh connection and the

I've never used std::list<T> myself. I was wondering when people use it when we already have std::vector<T> which is just like arrays with contiguous memory. std::vector seems like a perfect choice when we need sequential container! So my question is When exactly do you prefer std::list over std::vector ? and why exactly? When do you prefer std::vector over std::list ? and why? If there is performance consideration, then please list them too with detail explanation/information. If possible, quote some references also, to support your answer. Lists are better for inserting or deleting anywhere

(Yes, I know there is a question with almost the same title, but the answer was not satisfactory, see below) EDIT Sorry, the original question didn't use compiler optimization. This is now fixed, but to avoid trivial optimization and to come closer to my actual use case, the test has been split into two compilation units. The fact that the constructor of std::vector<> has linear complexity is a nuisance when it comes to performance-critical applications. Consider this simple code // compilation unit 1: void set_v0(type*x, size_t n) { for(size_t i=0; i<n; ++i) x[i] = simple_function(i); } //

I am running tomcat in my docker container from the Official Repo. docker pull tomcat And as per guidelines stated in the homepage I've run the instance and the Tomcat server is started docker run -it --rm -p 8888:8080 tomcat:8.0 And Tomcat server is available on the port 8888. I am able to get the response in the boot2docker when I execute the following command curl localhost:8888 But I would like to access the page from my web browser installed in my PC (which is out of the Virtual Box, the one that is installed in my Windows). Can I? If so how? You may be missing a port forwarding rule in

In Python, is it possible to get the object, say Foo, that contains another object, Bar, from within Bar itself? Here is an example of what I mean class Foo(object): def __init__(self): self.bar = Bar() self.text = "Hello World" class Bar(object): def __init__(self): self.newText = foo.text #This is what I want to do, #access the properties of the container object foo = Foo() Is this possible? Thanks! Pass a reference to the Bar object, like so: class Foo(object): def __init__(self): self.text = "Hello World" # has to be created first, so Bar.__init__ can reference it self.bar = Bar(self)