Run EC2 instance based on AMI created by packer

run_instance.sh

#!/bin/bash

EC2_NAME_SUFIX=`date "+%Y%m%d%H%M"`

# Query AWS if exists an AMI with TAG SHA1 = $CI_BUILD_REF
EXISTING_AMI=$(aws ec2 describe-images \
  --filter="Name=tag-key,Values=SHA1,Name=tag-value,Values=$CI_BUILD_REF")

# Extract the AMI ID
AMI_ID=$(echo $EXISTING_AMI |jq ".Images[] .ImageId" |sed -e 's/^"//' -e 's/"$//')

if [[ ! -z "$AMI_ID" ]]
then
  echo "Run EC2 instance for AMI $AMI_ID"

  INSTANCE_OUTPUT=$(aws ec2 run-instances \
    --image-id $AMI_ID \
    --count 1 \
    --instance-type t2.micro \
    --key-name FFTorres-US-EAST-1 \
    --security-group-ids sg-47862b3a \
    --subnet-id subnet-a71ad09b)
  
  INSTANCE_ID=$(echo $INSTANCE_OUTPUT |jq ".Instances[0] .InstanceId" |sed -e 's/^"//' -e 's/"$//')

  echo "Tagging instance $INSTANCE_ID with Name=TechTalk-TODO-App and SHA1=$CI_BUILD_REF"
  aws ec2 create-tags --resources $INSTANCE_ID \
    --tags Key=Name,Value=TeckTalk-TODO-App-$EC2_NAME_SUFIX Key=SHA1,Value=$CI_BUILD_REF

else
  echo "There is not an AMI tagged for SHA1 $CI_BUILD_REF"
  exit 1
fi