diff --git a/.env.dist b/.env.dist
new file mode 100644
index 0000000..06af3b6
--- /dev/null
+++ b/.env.dist
@@ -0,0 +1,6 @@
+COMPOSE_PROJECT_NAME=h-skills
+ALPINE_VER=3.19
+GOVERTER_VER=v1.4.0
+GOLANGCI_LINT_VER=v1.56.2
+POSTGRES_VER=16.2
+AIR_VER=1.52.0
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1146c3f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+/.task
+/.env
+/bin/env
+/tmp/
diff --git a/.golangci.yml b/.golangci.yml
new file mode 100644
index 0000000..9851b72
--- /dev/null
+++ b/.golangci.yml
@@ -0,0 +1,2 @@
+# golangci-lint configuration file.
+# Read more at: https://github.com/golangci/golangci-lint#config-file
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..358e3ee
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,20 @@
+ARG POSTGRES_VER
+ARG GO_VER
+ARG ALPINE_VER
+
+FROM postgres:${POSTGRES_VER} AS postgres
+
+COPY ./db/* /docker-entrypoint-initdb.d/
+
+RUN set -ex \
+    && chmod 1777 /tmp
+
+FROM golang:${GO_VER}-alpine${ALPINE_VER} AS golang
+
+ARG AIR_VER
+RUN set -ex \
+    && chmod 1777 /tmp \
+    &&  apk add --no-cache \
+        git \
+        tzdata \
+    && go install github.com/cosmtrek/air@v${AIR_VER}
diff --git a/Taskfile.go.yaml b/Taskfile.go.yaml
new file mode 100644
index 0000000..e9e9a56
--- /dev/null
+++ b/Taskfile.go.yaml
@@ -0,0 +1,129 @@
+version: '3'
+
+vars:
+  GOFUMPT_VER: '{{.GOFUMPT_VER | default "latest"}}'
+  GOIMPORTS_LOCAL: '{{.GOIMPORTS_LOCAL | default nil}}'
+  GOIMPORT_VER: '{{.GOIMPORT_VER | default "latest"}}'
+  GOLANGCI_LINT_VER: '{{.GOLANGCI_LINT_VER | default "latest"}}'
+  GOVULNCHECK_VER: '{{.GOVULNCHECK_VER | default "latest"}}'
+  PROTOLINT_VER: '{{.PROTOLINT_VER | default "latest"}}'
+  STATICCHECK_VER: '{{.STATICCHECK_VER | default "latest"}}'
+  TMP_DIR: '{{.TMP_DIR | default "./tmp"}}'
+
+tasks:
+  # =======
+  # HELPERS
+  # =======
+
+  lint:
+    desc: golangci-lint + protolint.
+    cmds:
+    - task: govulncheck
+    - task: staticcheck
+    - task: golangci-lint
+    - task: protolint
+
+  cs:
+    desc: fmt + goimports.
+    cmds:
+    - task: fmt
+    - task: goimports
+
+  # ===============
+  # QUALITY CONTROL
+  # ===============
+
+  fmt:
+    desc: format code using gofumpt.
+    cmds:
+    - >-
+      go run mvdan.cc/gofumpt@{{.GOFUMPT_VER}} -l -w .
+    sources:
+    - ./**/*.go
+
+  goimports:
+    desc: format imports using goimports.
+    cmds:
+    - >-
+      go run golang.org/x/tools/cmd/goimports@{{.GOIMPORT_VER}}
+      {{if .GOIMPORTS_LOCAL}} -local="{{.GOIMPORTS_LOCAL}}"{{end}} 
+      -w .
+    sources:
+    - ./**/*.go
+
+  tidy:
+    desc: go mod tidy + go mod verify.
+    cmds:
+    - go mod tidy -v
+    - go mod verify
+    sources:
+    - ./**/*.go
+    - go.mod
+    - go.sum
+
+  golangci-lint:
+    desc: golangci-lint.
+    cmds:
+    - go run github.com/golangci/golangci-lint/cmd/golangci-lint@{{.GOLANGCI_LINT_VER}} run -v ./...
+    sources:
+    - ./**/*.go
+
+  govulncheck:
+    desc: govulncheck.
+    cmds:
+    - go run golang.org/x/vuln/cmd/govulncheck@{{.GOVULNCHECK_VER}} ./...
+    sources:
+    - ./**/*.go
+
+  staticcheck:
+    desc: staticcheck.
+    cmds:
+    - go run honnef.co/go/tools/cmd/staticcheck@{{.STATICCHECK_VER}} -checks=all,-ST1000 ./...
+    sources:
+    - ./**/*.go
+
+  protolint:
+    desc: protolint -fix.
+    cmds:
+    - cmd: go run github.com/yoheimuta/protolint/cmd/protolint@{{.PROTOLINT_VER}} lint -fix .
+      ignore_error: true
+    sources: &protolint_sources
+    - ./**/*.proto
+
+  protolint:check:
+    desc: protolint check.
+    cmds:
+    - go run github.com/yoheimuta/protolint/cmd/protolint@{{.PROTOLINT_VER}} lint .
+    sources: *protolint_sources
+
+  # ===========
+  # DEVELOPMENT
+  # ===========
+
+  generate:
+    desc: go generate
+    cmds:
+    - go generate ./...
+    sources:
+    - ./**/*.go
+
+  vendor:
+    desc: go mod vendor.
+    cmds:
+    - go mod vendor -v
+    sources:
+    - go.mod
+    - go.sum
+    generates:
+    - vendor
+
+  test:
+    desc: go tests ./...
+    cmds:
+    - go test -race -buildvcs -coverprofile={{.TMP_DIR}}/coverage.out -vet=off ./...
+
+  test:cover:
+    desc: tests and display coverage.
+    deps: [ test ]
+    cmds:
+    - go tool cover -html={{.TMP_DIR}}/coverage.out
diff --git a/Taskfile.yaml b/Taskfile.yaml
new file mode 100644
index 0000000..cc19078
--- /dev/null
+++ b/Taskfile.yaml
@@ -0,0 +1,181 @@
+version: '3'
+
+includes:
+  go:
+    taskfile: ./Taskfile.go.yaml
+
+output: prefixed
+
+silent: true
+interval: 1s
+
+dotenv:
+- ./.env
+
+vars:
+  NEWLINE_EXCLUDE: >-
+    -not -path "./.git/*" 
+    -not -path "./.idea/*" 
+    -not -path "./vendor/*" 
+    -not -path "./tmp/*" 
+    -not -name "*.ico"  
+    -not -name "*.png" 
+    -not -name "*.svg"
+
+tasks:
+  # =======
+  # HELPERS
+  # =======
+
+  all:
+    desc: generate + tidy + lint + test.
+    cmds:
+    - task: generate
+    - task: go:tidy
+    - task: go:lint
+    - task: go:test
+
+  generate:
+    desc: all generators + cs.
+    cmds:
+    - task: goverter
+    - task: go:generate
+    - task: cs
+
+  cs:
+    desc: go:cs + newline.
+    cmds:
+    - task: go:cs
+    - task: newline
+
+  # ===============
+  # QUALITY CONTROL
+  # ===============
+
+  newline:
+    desc: add newline at end file.
+    cmds:
+    - >-
+      find . 
+      {{.NEWLINE_EXCLUDE}}
+      -type f -exec grep -Iq . {} \; -and -print0 
+      | xargs -0 -n 1 sh -c 'test -z "$(tail -c 1 "$0")" 
+      || (echo "" >> $0 && echo $0)' 
+      || exit 1
+    sources: &newline_sources
+    - ./**/*
+    - exclude: "*.ico"
+    - exclude: "*.png"
+    - exclude: "*.svg"
+
+  newline:check:
+    desc: check newline at end file.
+    cmds:
+    - find .
+      {{.NEWLINE_EXCLUDE}}
+      -type f -exec grep -Iq . {} \; -and -print0
+      | xargs -0 -n 1 sh -c 'test -z "$(tail -c 1 "$0")"
+      || (echo "No new line at end of $0" && exit 1)'
+      || exit 1
+    sources: *newline_sources
+
+  # ===========
+  # DEVELOPMENT
+  # ===========
+
+  dotenv:install:
+    internal: true
+    cmds:
+    - mkdir -p bin
+    - curl -o bin/env https://raw.githubusercontent.com/bashup/dotenv/master/dotenv
+    - chmod +x bin/env
+    status:
+    - test -f bin/env
+
+  dotenv:
+    deps: [ dotenv:install ]
+    desc: fill .env file.
+    vars:
+      UID:
+        sh: id -u
+      GID:
+        sh: id -g
+      GO_VER:
+        sh: go mod edit -json | jq -r .Go
+      GOIMPORTS_LOCAL:
+        sh: go list -m | awk -F/ '{print $1}'
+      ENV_DIST:
+        sh: cat .env.dist|tr '\n' ' '
+      GOPATH:
+        sh: go env GOPATH
+    cmds:
+    - bin/env set GROUP_ID={{.UID}} USER_ID={{.GID}} GO_VER={{.GO_VER}} GOPATH={{.GOPATH}} {{.ENV_DIST}}
+    sources:
+    - .env.dist
+    - Taskfile.yaml
+    generates:
+    - .env
+
+  goverter:
+    desc: go run goverter
+    deps: [ dotenv ]
+    cmds:
+    - go run github.com/jmattheis/goverter/cmd/goverter@{{.GOVERTER_VER}} gen ./...
+    sources:
+    - ./**/*.go
+
+  # =========
+  # OPERATION
+  # =========
+
+  up:
+    desc: up all services.
+    cmds:
+    - task: postgres:up
+    - task: api:up
+
+  down:
+    desc: docker compose down.
+    deps: [ dotenv ]
+    cmds:
+    - docker compose down -v --remove-orphans
+
+  postgres:build:
+    internal: true
+    desc: docker compose build postgres.
+    deps: [ dotenv ]
+    cmds:
+    - docker compose build postgres
+    sources:
+    - db/**/*
+    - Dockerfile
+    - docker-compose.yml
+
+  postgres:up:
+    desc: docker compose up postgres.
+    deps: [ dotenv, postgres:build ]
+    cmds:
+    - docker compose up -d --force-recreate postgres
+
+  postgres:push:
+    desc: docker compose push postgres.
+    deps: [ dotenv, postgres:build ]
+    cmds:
+    - docker compose push postgres
+
+  api:build:
+    internal: true
+    desc: docker compose build api image.
+    deps: [ dotenv ]
+    cmds:
+    - docker compose build api
+    sources:
+    - .env
+    - Dockerfile
+    - docker-compose.yml
+
+  api:up:
+    desc: docker compose up api.
+    deps: [ dotenv, api:build ]
+    cmds:
+    - docker compose up -d --force-recreate api
diff --git a/db/.gitkeep b/db/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..6eb6368
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,41 @@
+services:
+  postgres:
+    build:
+      target: postgres
+      context: .
+      args: &args
+        AIR_VER: ${AIR_VER}
+        ALPINE_VER: ${ALPINE_VER}
+        GO_VER: ${GO_VER}
+        POSTGRES_VER: ${POSTGRES_VER}
+    image: harbor.grachevko.ru/grachevko/h-skills/postgres:dev
+    labels:
+      ru.grachevko.dhu: 'postgres.h-skills.local'
+    environment:
+      POSTGRES_DB: postgres
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+      PGDATABASE: postgres
+      PGUSER: postgres
+      PGPASSWORD: postgres
+    volumes:
+    - type: tmpfs
+      target: /var/lib/postgresql/data
+      tmpfs:
+        size: 4294967296
+
+  api:
+    build:
+      target: golang
+      args: *args
+    command: air --build.cmd "go build -o ./tmp/api ./cmd/api/" --build.bin "./tmp/api"
+    labels:
+      ru.grachevko.dhu: 'api.h-skills.local'
+    environment:
+      GOPATH: ${GOPATH}
+    working_dir: /app
+    volumes:
+    - ./:/app
+    - ${GOPATH}:${GOPATH}
+    - ${HOME}/.cache/go-build:/.cache/go-build
+    user: ${USER_ID}:${GROUP_ID}