ci: Update dev-build template to run on every push and pull request. Tag images based on branch which triggered the workflow. Also improve git- and dockerignore

chore(deps): update npm to v8

See merge request !18

chore(deps): update griefed/baseimage-ubuntu-jdk-8 docker tag to v2

See merge request !16

chore(deps): update spring boot to v2.6.1

See merge request !15

# Conflicts:
#   build.gradle

chore(deps): update node.js to v16.13.1

See merge request !14

chore(deps): update lsiobase/nginx docker tag to v3.15

See merge request !13

chore(deps): update dependency org.apache.logging.log4j:log4j-web to v2.15.0

See merge request !12

chore(deps): update dependency eslint-plugin-vue to v8.2.0

See merge request !11

chore(deps): update dependency eslint to v8.4.1

See merge request !10

fix(deps): update dependency quasar to v2.3.4

See merge request !9

# Conflicts:
#   frontend/package.json

fix(deps): update dependency core-js to v3.19.3

See merge request !8

fix(deps): update dependency @quasar/extras to v1.12.2

See merge request !7

chore(deps): update dependency org.junit.platform:junit-platform-commons to v1.8.2

See merge request !6

chore(deps): update dependency gradle to v7.3.1

See merge request !5

chore(deps): pin dependencies

See merge request !3

# Conflicts:
#   frontend/package.json

chore(deps): update dependency @quasar/app to v3.2.5

See merge request !4