add readme

.env.sample

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+# the user ID of the running user. Applicable to Docker only.
+UID=
+# the group ID of the running user. Applicable to Docker only.
+GID=
+GEMINI_API_KEY=
+# the User-Agent header that is passed to API requests sent to the MET Norway API
+# see section "Identification" in https://api.met.no/doc/TermsOfService
+MET_API_USER_AGENT=
+# the vapid subject. this is typically the contact email of the owner of the server sending web pushes
+# if you are running your own 7am instance, then it should be your email
+VAPID_SUBJECT=
+# vapid public/private key pair base64url encoded. you can pass "--generate-vapid-keys" to the 7am binary
+# to generate one. they will be printed to stdout.
+VAPID_PRIVATE_KEY_BASE64=
+VAPID_PUBLIC_KEY_BASE64=

README.md

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+# 7am
+
+[7am.is](https://7am.is)
+
+![](./screenshot/homepage.png)
+
+7am is a website that delivers daily weather summary to the user at 7am.
+
+It queries weather data from ACCU Weather, then uses Gemini-2.0-Flash to summarize the resulting response.
+Finally, the summary is delivered to the user using the [web push API](https://developer.mozilla.org/en-US/docs/Web/API/Push_API).
+
+## Deploying 7am
+
+Before running 7am, create a `.env` file using the provided `.env.sample` file as a base template.
+The sample file also contains documentation of what the variables are for.
+
+### Docker
+
+7am provides a `Dockerfile` that packages 7am into a Docker image that you can run.
+You can choose to run the image as-is using `docker run`, or, you can also run it as part of a Docker Compose deployment.
+
+- **Volume**: 7am stores runtime data in `/app/data` within the container. The binary itself sits in `/app`
+- **Port**: 7am listens on port 8080 in the container.
+- **Running user**: 7am is run as `nonroot` within the container. You can pass `gid` and `uid` as build args to override the default user and group id.
+
+For Docker Compose users, a `docker-compose.yml` file is provided for reference.
+
+If you encounter permission issues, make sure that the data directory on the host is writable by the running user and group.
+For example, if user id and group id `1001:1001` owns the data directory on the host,
+then the running user and group in the container need to have the same user id and group id.
+Use `gid` and `uid` build args to override the IDs in the container accordingly.
+
+### Building 7am
+
+To compile 7am, you need to have Go 1.24 installed. Run:
+
+```
+go build -o ./server
+```
+
+to build 7am. A binary named `server` binary will be produced (you can choose to name it to something else.)
+Upon initial start up, a directory called `data` will be created in the current working directory.