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docs(whitespace): standardize `CMD` example commands (#17033)

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John Bampton 2023-04-07 01:56:38 +10:00 committed by GitHub
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4 changed files with 10 additions and 10 deletions
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4
language/golang/build-images.md
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@ -241,7 +241,7 @@ image is used to start a container.
We do this with the `CMD` command: We do this with the `CMD` command:
```dockerfile ```dockerfile
CMD [ "/docker-gs-ping" ] CMD ["/docker-gs-ping"]
``` ```
Here's the complete `Dockerfile`: Here's the complete `Dockerfile`:
@ -273,7 +273,7 @@ RUN CGO_ENABLED=0 GOOS=linux go build -o /docker-gs-ping
EXPOSE 8080 EXPOSE 8080
# Run # Run
CMD [ "/docker-gs-ping" ] CMD ["/docker-gs-ping"]
``` ```
The `Dockerfile` may also contain _comments_. They always begin with a `#` symbol, The `Dockerfile` may also contain _comments_. They always begin with a `#` symbol,

4
language/nodejs/build-images.md
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@ -158,7 +158,7 @@ COPY . .
The COPY command takes all the files located in the current directory and copies them into the image. Now, all we have to do is to tell Docker what command we want to run when our image is run inside of a container. We do this with the `CMD` command. The COPY command takes all the files located in the current directory and copies them into the image. Now, all we have to do is to tell Docker what command we want to run when our image is run inside of a container. We do this with the `CMD` command.
```dockerfile ```dockerfile
CMD [ "node", "server.js" ] CMD ["node", "server.js"]
``` ```
Here's the complete Dockerfile. Here's the complete Dockerfile.
@ -177,7 +177,7 @@ RUN npm install --production
COPY . . COPY . .
CMD [ "node", "server.js" ] CMD ["node", "server.js"]
``` ```
## Create a .dockerignore file ## Create a .dockerignore file

6
language/nodejs/run-tests.md
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@ -119,12 +119,12 @@ COPY package-lock.json package-lock.json
FROM base as test FROM base as test
RUN npm ci RUN npm ci
COPY . . COPY . .
CMD [ "npm", "run", "test" ] CMD ["npm", "run", "test"]
FROM base as prod FROM base as prod
RUN npm ci --production RUN npm ci --production
COPY . . COPY . .
CMD [ "node", "server.js" ] CMD ["node", "server.js"]
``` ```
We first add a label `as base` to the `FROM node:18-alpine` statement. This allows us to refer to this build stage in other build stages. Next we add a new build stage labeled test. We will use this stage for running our tests. We first add a label `as base` to the `FROM node:18-alpine` statement. This allows us to refer to this build stage in other build stages. Next we add a new build stage labeled test. We will use this stage for running our tests.
@ -189,7 +189,7 @@ RUN npm run test
FROM base as prod FROM base as prod
RUN npm ci --production RUN npm ci --production
COPY . . COPY . .
CMD [ "node", "server.js" ] CMD ["node", "server.js"]
``` ```
Now to run our tests, we just need to run the docker build command as above. Now to run our tests, we just need to run the docker build command as above.

6
language/python/build-images.md
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@ -116,7 +116,7 @@ COPY . .
Now, tell Docker what command to run when the image is executed inside a container using the `CMD` command. Note that you need to make the application externally visible (i.e. from outside the container) by specifying `--host=0.0.0.0`. Now, tell Docker what command to run when the image is executed inside a container using the `CMD` command. Note that you need to make the application externally visible (i.e. from outside the container) by specifying `--host=0.0.0.0`.
```dockerfile ```dockerfile
CMD [ "python3", "-m" , "flask", "run", "--host=0.0.0.0"] CMD ["python3", "-m" , "flask", "run", "--host=0.0.0.0"]
``` ```
Here's the complete Dockerfile. Here's the complete Dockerfile.
@ -133,7 +133,7 @@ RUN pip3 install -r requirements.txt
COPY . . COPY . .
CMD [ "python3", "-m" , "flask", "run", "--host=0.0.0.0"] CMD ["python3", "-m" , "flask", "run", "--host=0.0.0.0"]
``` ```
### Directory structure ### Directory structure
@ -170,7 +170,7 @@ $ docker build --tag python-docker .
=> [3/6] COPY requirements.txt requirements.txt => [3/6] COPY requirements.txt requirements.txt
=> [4/6] RUN pip3 install -r requirements.txt => [4/6] RUN pip3 install -r requirements.txt
=> [5/6] COPY . . => [5/6] COPY . .
=> [6/6] CMD [ "python3", "-m", "flask", "run", "--host=0.0.0.0"] => [6/6] CMD ["python3", "-m", "flask", "run", "--host=0.0.0.0"]
=> exporting to image => exporting to image
=> => exporting layers => => exporting layers
=> => writing image sha256:8cae92a8fbd6d091ce687b71b31252056944b09760438905b726625831564c4c => => writing image sha256:8cae92a8fbd6d091ce687b71b31252056944b09760438905b726625831564c4c