feat: init taskfile, docker-compose, env

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}