pmbauer

FROM alpine:3.4

ARG FOO
ADD test.sh .
RUN ./test.sh

pmbauer

udacity/my-awesome                1.0                 7.162 MB
udacity/my-awesome                big                 251.2 MB

pmbauer

# switches and options:
#           --rm : remove volume
#             -v : volume mount build folder
#             -w : set work area to build folder
#        /bin/sh : build script
docker run --rm \
  -v $(pwd):/go/src/github.com/udacity/my-awesome \
  -w /go/src/github.com/udacity/my-awesome \
  golang:1.5-alpine \
  /bin/sh -c 'apk add --update git; go get; go build -o target/my-awesome .'

pmbauer

FROM alpine:3.3
COPY target/my-awesome /usr/local/bin/my-awesome
CMD ["my-awesome"]

pmbauer

# golang:1.5-alpine includes the go compiler
FROM golang:1.5-alpine

# Add build tools needed by go get
RUN apk add --update git

# Add source code
COPY . /go/src/github.com/udacity/my-awesome

WORKDIR /go/src/github.com/udacity/my-awesome

pmbauer

$ docker build -t without_cached -f without_cached.dockerfile .
[...]
$ docker history without_cached
IMAGE               CREATED             CREATED BY                                      SIZE                COMMENT
19b3d76d50f5        3 weeks ago         /bin/sh -c apk add --update curl drill  && rm   2.26 MB             
70c557e50ed6        6 weeks ago         /bin/sh -c #(nop) ADD file:81ba6f20bdb99e6c13   4.794 MB

pmbauer

FROM alpine:3.3
RUN apk add --update curl drill \
 && rm -rf /var/cache/apk/*

pmbauer

FROM alpine:3.3
RUN apk add --update curl drill

# cleanup index package cache since this is dead weight
# that should not be deployed
RUN rm -rf /var/cache/apk/*

pmbauer

$ docker build -t extra_layers -f extra_layers.dockerfile .
[...]
$ docker history extra_layers
IMAGE               CREATED             CREATED BY                                      SIZE                COMMENT
6c6fffb28c43        3 weeks ago         /bin/sh -c rm -rf /var/cache/apk/*              0 B                 
636b0662bc76        3 weeks ago         /bin/sh -c apk add --update curl drill          3.009 MB            
70c557e50ed6        6 weeks ago         /bin/sh -c #(nop) ADD file:81ba6f20bdb99e6c13   4.794 MB

pmbauer

#!/usr/bin/env bash
#params
# dd_api_key=
# dd_app_key=
# screen_id=
curl -sX GET "https://app.datadoghq.com/api/v1/screen/${screen_id}?api_key=${dd_api_key}&application_key=${dd_app_key}" \
 | jq '{
         title: .board_title,
         description: .board_title,
         template_variables: .template_variables,