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Adding notes for working with Docker Hub

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Rob Greene 2022-03-06 16:25:47 -06:00
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# Working notes for pushing images to Docker Hub
> Note: It appears that the personal accounts on Docker Hub no longer automatically build based on a Github repository being tagged. (Maybe they never did as it's been 4 years!)
## Login
```bash
$ docker login
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
Username: a2geek
Password:
WARNING! Your password will be stored unencrypted in /home/rob/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store
Login Succeeded
```
## Built and Tag
This created the `latest` tag:
```bash
$ docker build -t a2geek/cc65-pipeline .
Sending build context to Docker daemon 135.2kB
Step 1/5 : FROM alpine:latest
---> e7d92cdc71fe
Step 2/5 : LABEL description="This is a cc65 Docker container intended to be used for build pipelines."
<snip>
---> 207cf150f1f0
Step 3/5 : ENV BUILD_DIR="/tmp" CC65_VERSION="V2.19" NULIB2_VERSION="v3.1.0" AC_VERSION="1.7.0" BASTOOLS_VERSION="0.3.1" ASU_VERSION="1.2.1"
<snip>
---> 06228100af88
Step 4/5 : COPY bin /usr/local/bin
<snip>
---> 0e009844ebc9
Step 5/5 : RUN a bunch of stuff
<snip>
---> 78d59c93b46b
Successfully built 78d59c93b46b
Successfully tagged a2geek/cc65-pipeline:latest
```
... and this tagged it with the date:
```bash
$ docker tag 78d59c93b46b a2geek/cc65-pipeline:2022-03-06
```
Check:
```bash
$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
a2geek/cc65-pipeline 2022-03-06 78d59c93b46b 31 minutes ago 238MB
a2geek/cc65-pipeline latest 78d59c93b46b 31 minutes ago 238MB
<none> <none> 8c7e891250c4 38 minutes ago 238MB
```
## Push to Docker Hub:
```bash
$ docker push a2geek/cc65-pipeline
The push refers to repository [docker.io/a2geek/cc65-pipeline]
d2d7d7253122: Pushed
e3169423110d: Pushed
5216338b40a7: Mounted from a2geek/concourse-image
2022-03-06: digest: sha256:48ab14d15ca474c1e28913e133a5edf2f30853a14936b27936772562cbb665f0 size: 947
d2d7d7253122: Layer already exists
e3169423110d: Layer already exists
5216338b40a7: Layer already exists
latest: digest: sha256:48ab14d15ca474c1e28913e133a5edf2f30853a14936b27936772562cbb665f0 size: 947
```