add nc and configure tmux #17

	name: build-observer
	on:
	push:

	jobs:
	push-ghcr:
	name: Build and push image
	runs-on: ubuntu-22.04
	permissions:
	contents: read
	packages: write
	id-token: write
	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Generate variables
	id: vars
	run: \|
	echo "date=$(date +%Y-%m-%d)" >> $GITHUB_OUTPUT

	- name: Login to ghcr
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ github.token }}

	- name: Build image
	run: \|
	docker build \
	--tag ghcr.io/${{ github.repository_owner }}/tag-observer:${{ steps.vars.outputs.date }} \
	--tag ghcr.io/${{ github.repository_owner }}/tag-observer:latest \
	observer

	- name: Push to ghcr
	run: \|
	docker push ghcr.io/${{ github.repository_owner }}/tag-observer:${{ steps.vars.outputs.date }}
	docker push ghcr.io/${{ github.repository_owner }}/tag-observer:latest

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